Hack The Sec-Leading Resource Of Linux Tutorial: Rhel7

How to install Zabbix 3.0 (Monitoring Server) on CentOS 7.x / RHEL 7.x

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<span style="color: #990000; font-size: large;"><u>Install Zabbix 3.0 (Monitoring Server) on CentOS 7.x / RHEL 7.x</u></span></h1>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Zabbix is a mature and effortless enterprise-class open source monitoring solution for network monitoring and application monitoring of millions of metrics.</span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Zabbix uses database like <a href="http://www.hackthesec.co.in/search/label/Mysql">MySQL</a>, <a href="http://www.hackthesec.co.in/search/label/MaraiDB">MariaDB</a>, Oracle and IBM DB2 to store its data. Zabbix web interface is written in <a href="http://www.hackthesec.co.in/search/label/PHP">PHP</a>.</span></span></div>
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<b><u><span style="color: #0b5394;">Some of its key features are listed below :</span></u></b></div>
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<ul style="color: #333333; font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px; text-align: left;">
<li>Monitor everything which is on network like Servers, applications, database instance and network devices.</li>
<li>Zabbix provides Web based administration interface.</li>
<li>Monitoring CPU utilization of a particular process or a group of process ( proc.cpu.util)</li>
<li>Using low-level discovery rules, zabbix can discover Vmware hypervisor ( ESXI ) and Virtual machines.</li>
<li>Zabbix also supports agentless monitoring</li>
<li>Monitoring of database servers like MySQL, <a href="http://www.hackthesec.co.in/search/label/PostgreSQL">PostgreSQL</a>, Oracle and Microsoft SQL Server.</li>
<li>Zabbix can also perform the task of capacity planning for your environment.</li>
<li>Zabbix is Open Source so no cost involved and can be deployed on small and large environment.</li>
<li>Hardware Monitoring using Zabbix via IPMI credentials.</li>
<li>Network Device monitoring using snmp agents.</li>
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<span style="color: #333333;"><span style="font-size: 15px; line-height: 26px;"><b>Below are the details of my server on which i will install Zabbix.</b></span></span></div>
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<span style="color: #333333;"><span style="font-size: 15px; line-height: 26px;">Hostname = zabbix.hackthesec.co.in</span></span></div>
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<span style="color: #333333;"><span style="font-size: 15px; line-height: 26px;">IP Address = 192.168.2.2</span></span></div>
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<span style="color: #333333;"><span style="font-size: 15px; line-height: 26px;">OS = <a href="http://www.hackthesec.co.in/search/label/Centos">CentOS</a> 7.x / <a href="http://www.hackthesec.co.in/search/label/RHEL">RHEL </a>7.x</span></span></div>
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<span style="color: #333333;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step:1 Enable EPEL and Zabbix Repository</u></b></span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[hackthesec@zabbix ~]# yum install epel-release
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# rpm -ivh http://repo.zabbix.com/zabbix/3.0/rhel/7/x86_64/zabbix-release-3.0-1.el7.noarch.rpm</span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step:2 Install Zabbix Server, Database, Web Server and PHP packages</u></b></span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Use the below command to install rpm package of Zabbix server, Database Sever (MariaDB) , Web Server ( http) and PHP.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# yum -y install zabbix-server-mysql zabbix-web-mysql mysql mariadb-server httpd php</span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step:3 Configure Zabbix Database.</u></b></span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Start the Database (MariaDB) service</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# systemctl start mariadb</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# systemctl enable mariadb</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">ln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.service'
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]#</span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Use ‘mysql_secure_installation‘ command to set the root password of mariadb database and configure other parameters like ‘Remove anonymous users‘, ‘Disallow root login remotely‘ and ‘Remove test database and access to it‘</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# mysql_secure_installation</span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Now create the Zabbix Database (zabbix_db) and database user (zabbix_user) and grant all privileges to the user on the Zabbix database.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium; line-height: 20.8px;">[hackthesec</span><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">@zabbix ~]# mysql -u root -p
Enter password: 
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 10
Server version: 5.5.47-MariaDB MariaDB Server

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> create database zabbix_db;
Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> grant all privileges on zabbix_db.* to zabbix_user@localhost identified by <new_password>;
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> exit
Bye
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]#</span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Now import the database Schema using below commands,</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# cd /usr/share/doc/zabbix-server-mysql-3.0.1</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix zabbix-server-mysql-3.0.1]# gunzip create.sql.gz</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix zabbix-server-mysql-3.0.1]# mysql -u root -p zabbix_db < create.sql</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">Enter password:
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix zabbix-server-mysql-3.0.1]#</span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step:4 Edit Zabbix Server Configuration file</u></b></span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Edit the Zabbix Server’s config file (/etc/zabbix/zabbix_server.conf) and specify the database name for zabbix , database user name & its password.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# vi /etc/zabbix/zabbix_server.conf</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">...................................
DBHost=localhost
DBName=zabbix_db
DBUser=zabbix_user
DBPassword=XXXXXXX
...................................</span></span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Save & exit the file.</span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Configure PHP Setting</u></b></span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Set the below parameters in the PHP config file (/etc/php.ini )</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# vi /etc/php.ini</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">................................
max_execution_time = 600
max_input_time = 600
memory_limit = 256M
post_max_size = 32M
upload_max_filesize = 16M
date.timezone = Asia/Kolkata
...............................</span></span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Allow the ports in the Firewall</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# firewall-cmd --permanent --add-port=10050/tcp</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">success
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# firewall-cmd --permanent --add-port=10051/tcp</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">success
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# firewall-cmd --permanent --add-port=80/tcp</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">success
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# firewall-cmd --reload </span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">success
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# systemctl restart firewalld</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]#</span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Set the below Selinux rule.</span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# setsebool -P httpd_can_connect_zabbix=1</span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Start the Zabbix and Web Server Service and make sure it is enable across the reboot.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# systemctl start zabbix-server</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# systemctl enable zabbix-server</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">ln -s '/usr/lib/systemd/system/zabbix-server.service' '/etc/systemd/system/multi-user.target.wants/zabbix-server.service'
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# </span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# systemctl start httpd</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]# systemctl enable httpd</span>
<span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">ln -s '/usr/lib/systemd/system/httpd.service' '/etc/systemd/system/multi-user.target.wants/httpd.service'
[</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium; line-height: 20.8px;">@zabbix ~]#</span></pre>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step:5 Browse the Zabbix Web interface using below URL</u></b></span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">http://192.168.2.2/zabbix/ </span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">or </span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">http://zabbix.hackthesec.co.in./zabbix</span></span></div>
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<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Replace the IP address or hostname as per your setup.</span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjv-NnYNwyFqaf3BgJ3R06S7KWKsrXXCx2pkdhYYF4ET7g93wrHMX7zx8UT_FU7y0V29VoDYAY3p8-v8IVeuk-KvKLdrZtOGUqAVm5W0c4qbUg0PgKbyuc8gJ9PK5lXwoh6KtgvOQo85ybh/s1600/Zabbix-Server-Installation.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjv-NnYNwyFqaf3BgJ3R06S7KWKsrXXCx2pkdhYYF4ET7g93wrHMX7zx8UT_FU7y0V29VoDYAY3p8-v8IVeuk-KvKLdrZtOGUqAVm5W0c4qbUg0PgKbyuc8gJ9PK5lXwoh6KtgvOQo85ybh/s1600/Zabbix-Server-Installation.jpg" /></a></div>
<div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"></span><br />
<div style="font-size: 15px; line-height: 26px;">
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;">Click on 'Next step'</span></div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;">
<div style="font-size: 15px; line-height: 26px;">
On this Step Zabbix Pre-requisites are checked and verified</div>
<div class="separator" style="clear: both; font-size: 15px; line-height: 26px; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTx3IlYSEzPiLth6Pe7_8UpMr_93bKNUNnrIVCnNOfwoGp0Ruhn3QfRTZXJLfJLLojrRIfuRg_izgGiZox7AP9GXfwNVyPdRjy0y9yudEc212jzRyVV78t3E-KbqFuLpL5jsJeqDUjV4OA/s1600/Zabbix-pr-requisites_hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTx3IlYSEzPiLth6Pe7_8UpMr_93bKNUNnrIVCnNOfwoGp0Ruhn3QfRTZXJLfJLLojrRIfuRg_izgGiZox7AP9GXfwNVyPdRjy0y9yudEc212jzRyVV78t3E-KbqFuLpL5jsJeqDUjV4OA/s1600/Zabbix-pr-requisites_hackthesec.co.in.jpg" /></a></div>
<div>
<div>
<span style="font-size: 15px; line-height: 26px;">Click on 'Next step'</span></div>
<div>
<span style="font-size: 15px; line-height: 26px;">Specify the Zabbix Database name, database user and its password.</span></div>
</div>
</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxYKMLKW7WSiLbrL8ixUHzO0e8kn7ujO_g_TanyvMN1I-7soWyRmYv4VG_nQEJSwF4Yqpl3c2wue-bOFMtnGeZIkR9JvbK0s2U8mQCof50mCeMwQd1wDmNtNJ8l2bEMOMvAuIasJ2BfTc6/s1600/Zabbix-installation-DB-connection_hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxYKMLKW7WSiLbrL8ixUHzO0e8kn7ujO_g_TanyvMN1I-7soWyRmYv4VG_nQEJSwF4Yqpl3c2wue-bOFMtnGeZIkR9JvbK0s2U8mQCof50mCeMwQd1wDmNtNJ8l2bEMOMvAuIasJ2BfTc6/s1600/Zabbix-installation-DB-connection_hackthesec.co.in.jpg" /></a></div>
<div style="color: #333333; font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px;">
<br /></div>
<div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Specify the Zabbix Server details and Port number.</span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjs9-pc36bI6_sur3OHUCvyf942GkU7qRQJPsuX4_BiYIFi6_KY31R4xtaG4LA0Xl5W3BnOSjW3JwgemIR8uQH9nE-Luh5id4YQfVU9sfLdiKc9DZUpdpF73XQFfklPk4GPXGdW5HV_2bjY/s1600/Zabbix-Server-Details_hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjs9-pc36bI6_sur3OHUCvyf942GkU7qRQJPsuX4_BiYIFi6_KY31R4xtaG4LA0Xl5W3BnOSjW3JwgemIR8uQH9nE-Luh5id4YQfVU9sfLdiKc9DZUpdpF73XQFfklPk4GPXGdW5HV_2bjY/s1600/Zabbix-Server-Details_hackthesec.co.in.jpg" /></a></div>
<div>
<div style="color: #333333; font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px;">
Click on 'Next step' to continue.</div>
<div style="color: #333333; font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px;">
Pre-installation summary of Zabbix Servers, click on 'Next step' to continue.</div>
<div class="separator" style="clear: both; color: #333333; font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtUGBItJuBWBnOSqCpDuyckgTjB7ZrkyP1oC9s-3w_V_LZPaI8T8hUgKWJPIJ_HJXvYSVy8UxlaXVzaXBid9l8Z619GpGzLWdT1GObJTCLZgRTe-AlBLqXXjHumcxinEXEx56rxTA0BRB6/s1600/Pre-installation-summary-zabbix-server-hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtUGBItJuBWBnOSqCpDuyckgTjB7ZrkyP1oC9s-3w_V_LZPaI8T8hUgKWJPIJ_HJXvYSVy8UxlaXVzaXBid9l8Z619GpGzLWdT1GObJTCLZgRTe-AlBLqXXjHumcxinEXEx56rxTA0BRB6/s1600/Pre-installation-summary-zabbix-server-hackthesec.co.in.jpg" /></a></div>
<div style="color: #333333; font-family: verdana, geneva, sans-serif;">
<span style="font-size: 15px; line-height: 26px;">As we can see that Zabbix installation is completed successfully</span></div>
<div class="separator" style="clear: both; color: #333333; font-family: verdana, geneva, sans-serif; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoobstwlhxO05XJxY3Is0QgpkjglYH0tVEQGXjQDCD_mebFZnP7wZJYRX8jkw4w5JzrPXzYS6gQDOo_BPGlnNLJuVt4Tg7i9FKLvvU-VtgR80FPSIWB5MFgce0p6BBhD5hfbsuClUPWvcD/s1600/zabbix-installation-successfully_hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoobstwlhxO05XJxY3Is0QgpkjglYH0tVEQGXjQDCD_mebFZnP7wZJYRX8jkw4w5JzrPXzYS6gQDOo_BPGlnNLJuVt4Tg7i9FKLvvU-VtgR80FPSIWB5MFgce0p6BBhD5hfbsuClUPWvcD/s1600/zabbix-installation-successfully_hackthesec.co.in.jpg" /></a></div>
<div style="color: #333333; font-family: verdana, geneva, sans-serif;">
<div>
<span style="font-size: 15px; line-height: 26px;">When we click on 'finish' , it will re-direct us to the Zabbix web interface Console.</span></div>
<div>
<span style="font-size: 15px; line-height: 26px;">Use user name as 'admin' and password 'zabbix'</span></div>
</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxQUlDWbIQtV5UQ9MTQXFhcWfKVMH-fKve3j903edxeh65tagSHWKmm1o0-09cuY-TR_-6jqHngcusu-4YD9FI_dsPFXNdw3EQ9rU99tZjbFZ2cR75cYMOtbitx60ShRxNRKVQw5G1awDY/s1600/Zabbix-Web-Console_hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxQUlDWbIQtV5UQ9MTQXFhcWfKVMH-fKve3j903edxeh65tagSHWKmm1o0-09cuY-TR_-6jqHngcusu-4YD9FI_dsPFXNdw3EQ9rU99tZjbFZ2cR75cYMOtbitx60ShRxNRKVQw5G1awDY/s1600/Zabbix-Web-Console_hackthesec.co.in.jpg" /></a></div>
<div style="color: #333333; font-family: verdana, geneva, sans-serif;">
<span style="font-size: 15px; line-height: 26px;">Zabbix Server Dashboard :</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhA0nAfl74ye3WGXTlKEYcS9FjZns-mtn6_xM_IeEjFoAJBPMWJWv9U4icvWdMa65VP8sYLms1JwJ8w9J2ZStmnqOxYADpXorml4vDA3b4190XCRUtAJ7TUiZf5OGyQ0A4V6Jz5GaRsUQ1Q/s1600/Zabbix-Monitoring-Server-Dashboard_hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhA0nAfl74ye3WGXTlKEYcS9FjZns-mtn6_xM_IeEjFoAJBPMWJWv9U4icvWdMa65VP8sYLms1JwJ8w9J2ZStmnqOxYADpXorml4vDA3b4190XCRUtAJ7TUiZf5OGyQ0A4V6Jz5GaRsUQ1Q/s1600/Zabbix-Monitoring-Server-Dashboard_hackthesec.co.in.jpg" /></a></div>
<div style="font-family: verdana, geneva, sans-serif;">
<div>
<span style="font-size: 15px; line-height: 26px;"><b><u><span style="color: #0b5394;">Step:6 Add a node to Zabbix Server for Monitoring.</span></u></b></span></div>
<div style="color: #333333;">
<span style="font-size: 15px; line-height: 26px;">Let’s assume i want to add my Ubuntu 16.04 Machine to Zabbix Server for monitoring. Login to the machine and perform the following tasks .</span></div>
</div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">hackthesec@aws:~$ sudo apt-get install zabbix-agent</span></span></pre>
</div>
</div>
<div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Edit the Agent file and specify the Zabbix Server address.</span></span></div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">@aws:~$ sudo vi /etc/zabbix/zabbix_agentd.conf
..................................
Server=192.168.2.2
ServerActive=192.168.2.2
Hostname=aws.hackthesec.co.in
..................................</span></span></pre>
</div>
<div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Start Zabbix Agent Service</span></span></div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">@aws:~$ sudo systemctl start zabbix-agent
</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">@aws:~$ sudo systemctl enable zabbix-agent
Synchronizing state of zabbix-agent.service with SysV init with /lib/systemd/systemd-sysv-install...
Executing /lib/systemd/systemd-sysv-install enable zabbix-agent
</span></span><span style="color: white; font-size: medium; line-height: 20.8px;">hackthesec</span><span style="color: white; font-size: medium;"><span style="line-height: 20.8px;">@aws:~$</span></span></pre>
</div>
<div>
<div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Now Go to the Zabbix Web Interface .</span></span></div>
<div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span></div>
<div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Click on Configuration —> Hosts –> Create Host</span></span></div>
</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2IikxX2zAAzzhWgsLRXHeKaxL9Re7iaZilmb0-lhqeyLkekVLv8nUq-GrJDwYuFWQpTjrZF9v2wZ_gLZ1fAJYoNXcXym7Ef7E0eNztRbMqa8OCjiqhnXqkYVUikIo_tC7hRZMhyphenhyphenkogJdD/s1600/Zabbix-Configuration-hosts_hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2IikxX2zAAzzhWgsLRXHeKaxL9Re7iaZilmb0-lhqeyLkekVLv8nUq-GrJDwYuFWQpTjrZF9v2wZ_gLZ1fAJYoNXcXym7Ef7E0eNztRbMqa8OCjiqhnXqkYVUikIo_tC7hRZMhyphenhyphenkogJdD/s1600/Zabbix-Configuration-hosts_hackthesec.co.in.jpg" /></a></div>
<div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">Specify the Host name, IP address and Group names. In Templates Tab, search appropriate templates and click on Add.</span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjXvH4Tr0LH9qsDtEWbBhx0RDGY1wtfZ_SmHRFyl3MLbefXH2dA4XlPOSIFidfVqDaj0QvJu9Jo7ZQ6iA1Jj0JAAceQsqSBVuXzV2VYrOzbFhh-NEXFLVev3kHevmf5i5L9_jIY_Y3u_Zy/s1600/Zabbix-OS-Templates_hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjXvH4Tr0LH9qsDtEWbBhx0RDGY1wtfZ_SmHRFyl3MLbefXH2dA4XlPOSIFidfVqDaj0QvJu9Jo7ZQ6iA1Jj0JAAceQsqSBVuXzV2VYrOzbFhh-NEXFLVev3kHevmf5i5L9_jIY_Y3u_Zy/s1600/Zabbix-OS-Templates_hackthesec.co.in.jpg" /></a></div>
<div>
<span style="color: #333333; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 15px; line-height: 26px;">To View the events for all the hosts or a particular host, Click on Monitoring —> Triggers</span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfaVX9JLC9eKKBNcIfK22cWHLzuGJCPwUdMtkeQIvcPyu0gq5GilQmxjNK4HCcCu8tE4fMYLfU-DSEX6fn29ImPhx3Yn5ZLOCp0RfA6ztmuvXVVBnBwhY8n1ABz-k5leiVin0aqNjLsZpN/s1600/Zabbix-Server-Status-triggers_hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfaVX9JLC9eKKBNcIfK22cWHLzuGJCPwUdMtkeQIvcPyu0gq5GilQmxjNK4HCcCu8tE4fMYLfU-DSEX6fn29ImPhx3Yn5ZLOCp0RfA6ztmuvXVVBnBwhY8n1ABz-k5leiVin0aqNjLsZpN/s1600/Zabbix-Server-Status-triggers_hackthesec.co.in.jpg" /></a></div>
<div>
<br />
<span style="color: #0b5394; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Zabbix Email-Notification Setting</u></b></span></span><br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b>E-mail settings</b></span></span><br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Initially there are several predefined notification <b>delivery methods</b> in Zabbix. <b>E-mail</b> is one of those.</span></span><br />
<br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">To configure e-mail settings, go to <b>Administration → Media types</b> and click on <b>Email </b>in the list of pre-defined media types.</span></span><br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.zabbix.com/documentation/3.0/_media/manual/quickstart/media_types.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://www.zabbix.com/documentation/3.0/_media/manual/quickstart/media_types.png" /></a></div>
<span style="color: #0b5394; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u><br /></u></b></span></span>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">This will present us with the e-mail settings definition form.</span></span><br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.zabbix.com/documentation/3.0/_media/manual/quickstart/media_type_email.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://www.zabbix.com/documentation/3.0/_media/manual/quickstart/media_type_email.png" /></a></div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Set the values of SMTP server, SMTP helo and SMTP e-mail to the appropriate for your environment.<b>Press Update when ready.</b></span></span><br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Now you have configured 'Email' as a working media type. A media type must be linked to users by defining specific delivery addresses (like we did when configuring a new user), otherwise it will not be used.</span></span><br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b>New action</b></span></span><br />
<br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Delivering notifications is one of the things actions do in Zabbix. Therefore, to set up a notification, go to <b>Configuration → Actions</b> and click on Create action.</span></span><br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.zabbix.com/documentation/3.0/_media/manual/quickstart/new_action.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://www.zabbix.com/documentation/3.0/_media/manual/quickstart/new_action.png" /></a></div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">In this form, enter a name for the action.</span></span><br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">{TRIGGER.STATUS} and {TRIGGER.NAME} macros (or variables), visible in the Default subject and Default message fields, will be replaced with the actual trigger status and trigger name values.</span></span><br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">In the most simple case, if we do not add any more specific conditions, the action will be taken upon any trigger change from 'Ok' to 'Problem'.</span></span><br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span>
<br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">We still should define what the action should do - and that is done in the Operations tab. Click on New in there, which opens a new operation form.</span></span><br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.zabbix.com/documentation/3.0/_media/manual/quickstart/new_operation.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://www.zabbix.com/documentation/3.0/_media/manual/quickstart/new_operation.png" /></a></div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Here, click on Add in the Send to Users block and select the user ('user') we have defined. Select 'Email' as the value of Send only to. When done with this, click on Add in the operation detail block.</span></span><br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span>
<br />
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">That is all for a simple action configuration, so click Add in the action form.</span></span><br />
<br /></div>
</div>
</div>
<div>
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></div>
</div>

How to install Zabbix 3.0 (Monitoring Server) on CentOS 7.x / RHEL 7.x

Install Zabbix 3.0 (Monitoring Server) on CentOS 7.x / RHEL 7.x Zabbix is a mature and effortless enterprise-class open source monitorin...

How to Install DHCP on CentOs 7 / RHEL 7

<div dir="ltr" style="text-align: left;" trbidi="on">
<h2 class="title single-title title20" style="background-color: white; border: 0px; font-family: 'Open Sans'; font-size: 24px; line-height: 30px; margin: 0px 0px 5px; opacity: 1; outline: 0px; padding: 0px; transition: opacity 0.24s ease-in-out; vertical-align: baseline; visibility: visible;">
<u><span style="color: #990000;">Install DHCP on CentOs 7 / RHEL 7</span></u></h2>
<div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">DHCP Stands for Dynamic Host Configurations Protocol that is used to dynamically assign IP Addresses to Clients, on every device attached on network requires an IP Address to communicate with other devices.</span></span></div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwM0cqK_On4Fw5aALAdxXbLEqFv3ITWtmXz-nC8IzpJJzL9oQ4S1qqWw8pllK843ZkpVy75fsrydsQw2TKDJuGjaK3xegwFAVnxedm33R5z2egWcmhW2DzqO-h31rqNGAUhhLGP2h3oOen/s1600/dhcp_server_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwM0cqK_On4Fw5aALAdxXbLEqFv3ITWtmXz-nC8IzpJJzL9oQ4S1qqWw8pllK843ZkpVy75fsrydsQw2TKDJuGjaK3xegwFAVnxedm33R5z2egWcmhW2DzqO-h31rqNGAUhhLGP2h3oOen/s1600/dhcp_server_www.hackthesec.co.in.png" /></a></div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span></div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">If you notice when you connect to a network and you get an IP address automatically that is given by <a href="http://www.hackthesec.co.in/search/label/DHCP-Server">DHCP Server</a>.</span></span></div>
</div>
<div>
<div style="font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px;">
<b><u><span style="color: #0b5394;">Step – 1</span></u></b></div>
<div style="font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px;">
Open the terminal window and install DHCP package using yum command.</div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: large;"><span style="line-height: 20.8px;">yum install dhcp -y</span></span></pre>
</div>
<div>
<div>
<span style="color: #0b5394; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step - 2</u></b></span></span></div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Edit the configuration file.</span></span></div>
</div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: large;"><span style="line-height: 20.8px;">vi /etc/etc/dhcp/dhcpd.conf</span></span></pre>
</div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Copy and paste below code into '<b>/etc/dhcp/dhcpd.conf</b>' file, and change according to your desired settings.</span></span></div>
<div>
<pre style="background-color: whitesmoke; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; margin-bottom: 10px; overflow: auto; padding: 9.5px; word-break: break-all; word-wrap: break-word;"><span style="color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 13px; line-height: 1.42857;"># DHCP Server Configuration file.
# see /usr/share/doc/dhcp*/dhcpd.conf.example
# see dhcpd.conf(5) man page
#
# Option definitions common to all supported networks
# Specify domain name
option domain-name “hackthesec.co.in”;
# Specify name server’s hostname or IP address
option domain-name-servers 192.168.1.1;
# Default lease time
default-lease-time 600;
# Max lease time
max-lease-time 7200;
# This DHCP server Authoritative server in the Network.
authoritative;
subnet 192.168.1.0 netmask 255.255.255.0 {# Specify the range of lease IP address
range dynamic-bootp 192.168.1.11 192.168.1.100;
# Specify broadcast address
option broadcast-address 192.168.1.255;
# Specify default gateway
option routers 192.168.1.1;
}</span><span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px; white-space: normal;">
</span></span></pre>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Now Save and Exit the file.</span></span></div>
</div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: large;"><span style="line-height: 20.8px;">:wq</span></span></pre>
</div>
<div>
<div>
<span style="color: #0b5394; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step - 3</u></b></span></span></div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Now its time to Enable and start the DHCP Service.</span></span></div>
</div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: large;"><span style="line-height: 20.8px;">systemctl enable dhcpd</span></span></pre>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-size: large;"><span style="line-height: 20.8px;">systemctl start dhcpd</span></span></pre>
</div>
<div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">If you didn’t miss anything clients machines on your network now able to get automatic ip addresses from your DHCP server.</span></span></div>
<div style="font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px;">
<br /></div>
<div style="font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px;">
So, setup your client machine on "Obtain an IP Address Automatically" it should get an automatic ip addresses from the specified range in the <a href="http://www.hackthesec.co.in/search/label/DHCP">DHCP </a>server.</div>
</div>
<div style="font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px;">
<br /></div>
<div style="font-family: verdana, geneva, sans-serif; font-size: 15px; line-height: 26px;">
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></div>
</div>
</div>

How to Install DHCP on CentOs 7 / RHEL 7

Install DHCP on CentOs 7 / RHEL 7 DHCP Stands for Dynamic Host Configurations Protocol that is used to dynamically assign IP Addresses ...

How to install webmin on CentOS/Redhat 7

<div dir="ltr" style="text-align: left;" trbidi="on">
<h2 class="title single-title title20" style="background-color: white; border: 0px; font-family: 'Open Sans'; font-size: 24px; line-height: 30px; margin: 0px 0px 5px; opacity: 1; outline: 0px; padding: 0px; transition: opacity 0.24s ease-in-out; vertical-align: baseline; visibility: visible;">
<u><span style="color: #990000;">Install webmin on CentOS 7</span></u></h2>
<div>
<span style="color: #222222; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><a href="http://www.hackthesec.co.in/search/label/webmin">Webmin</a> is a web-based interface for system administration for Unix. Using any modern web browser, you can setup user accounts, Apache, DNS, file sharing and much more. Webmin removes the need to manually edit Unix configuration files like /etc/passwd, and lets you manage a system from the console or remotely. See the s<a href="http://www.webmin.com/standard.html">tandard modules</a> page for a list of all the functions built into Webmin</span></span></div>
<div>
<ul style="background-color: white;">
<li style="font-family: Verdana, Geneva, sans-serif; line-height: 19.2px;"><span style="font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; line-height: 30px; text-decoration: none;"><a href="http://www.hackthesec.co.in/2016/01/how-to-install-usermin-on-centos.html"><span style="font-size: large;">How to Install Usermin On Linux</span></a></span></li>
<li><span style="color: #333333; font-family: Verdana, Geneva, sans-serif; font-size: large;"><span style="line-height: 19.2px;"><a href="http://www.hackthesec.co.in/2016/01/how-to-install-webmin-on-centos-6.html">How to install webmin on centos 6</a></span></span></li>
</ul>
</div>
<div style="text-align: center;">
<span style="color: #222222; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>INSTALLATION STEPS:-</u></b></span></span></div>
<div>
<span style="color: #0b5394; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step-1: </u></b></span></span></div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: trebuchet ms, sans-serif;"><span style="font-size: 15px; line-height: 15.6px;">mkdir /download
cd /download</span></span></pre>
</div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u><span style="color: #0b5394;">Step-2:</span></u></b><span style="color: #222222;"> Download the rpm file from <a href="http://webmin.com/">webmin.com</a></span></span></span></div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: trebuchet ms, sans-serif;"><span style="font-size: 15px; line-height: 15.6px;">wget </span></span><span style="background-color: transparent; font-size: 15px; line-height: 15.6px;"><span style="color: white; font-family: trebuchet ms, sans-serif;">http://prdownloads.sourceforge.net/webadmin/webmin-1.791-1.src.rpm</span></span></pre>
</div>
<div>
<span style="color: #222222; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Once you finish download make sure you have perl package installed, as webmin is a perl application it will check the package when initial installation process begin if it is there it will continue so let’s install perl packages first.</span></span></div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: trebuchet ms, sans-serif;"><span style="font-size: 15px; line-height: 15.6px;">yum -y install perl perl-Net-SSLeay openssl perl-IO-Tty</span></span></pre>
</div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u><span style="color: #0b5394;">Step-3:</span></u></b><span style="color: #222222;"> Now install webmin from '.rpm' file we downloaded.</span></span></span></div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: trebuchet ms, sans-serif;"><span style="font-size: 15px; line-height: 15.6px;">rpm -ivUh </span></span><span style="background-color: transparent; color: white; font-family: 'trebuchet ms', sans-serif; font-size: 15px; line-height: 15.6px;">webmin-1.791-1.src.rpm</span></pre>
</div>
<div style="text-align: center;">
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Method-2: How to Install webmin using Yum Command.</u></b></span></span></div>
<div style="text-align: left;">
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Another way to install webmin on your <a href="http://www.hackthesec.co.in/search/label/Centos">CentOS</a> 7 Box using Yum Command, since webmin is not in CentOS default Repositories, we have to create webmin repository before installation.</span></span></div>
<div style="text-align: left;">
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u><span style="color: #0b5394;">Step-1:</span></u></b> Frist step is to create the repository file.</span></span></div>
<div style="text-align: left;">
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: trebuchet ms, sans-serif;"><span style="font-size: 15px; line-height: 15.6px;">vi /etc/yum.repos.d/webmin.repo</span></span></pre>
</div>
<div style="text-align: left;">
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Copy and paste the below code into the file.</span></span></div>
<div style="text-align: left;">
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 13px; line-height: 1.42857; margin-bottom: 10px; overflow: auto; padding: 9.5px; word-break: break-all; word-wrap: break-word;">[Webmin]
name=Webmin Distribution Neutral
#baseurl=http://download.webmin.com/download/yum
mirrorlist=http://download.webmin.com/download/yum/mirrorlist
enabled=1</pre>
</div>
<div>
<span style="color: #222222; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Save and exit.</span></span></div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u><span style="color: #0b5394;">Step-2:</span></u></b><span style="color: #222222;"> Now download the GPG key using the below command.</span></span></span></div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: trebuchet ms, sans-serif;"><span style="font-size: 15px; line-height: 15.6px;">wget http://www.webmin.com/jcameron-key.asc</span></span></pre>
</div>
<div>
<span style="color: #222222; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Import the GPG Key</span></span></div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: trebuchet ms, sans-serif;"><span style="font-size: 15px; line-height: 15.6px;">rpm –import jcameron-key.asc</span></span></pre>
</div>
<div>
<span style="font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u><span style="color: #0b5394;">Step-3:</span></u></b><span style="color: #222222;"> Finally you can install the webmin using Yum command.</span></span></span></div>
<div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: trebuchet ms, sans-serif;"><span style="font-size: 15px; line-height: 15.6px;">yum install webmin –y</span></span></pre>
</div>
<div>
<span style="color: #222222; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Now open <b>http://serverip:10000</b> in your browser, you could see the below screen after login ( Use root username and password ).</span></span></div>
<div>
<img src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizudnF5XbG8-xiAO9rt-OQYS8oQCQJ5B_SIsx-apcSksTewahdIeRULIOfuoTY_rpiFC5n8H6xhg8jBjJyCLfy9oUgXgiH9x9snAl7gxB3bNUZaolkfRvNKnXlcWXBgFzkkgCErVgBUnMF/s640/webmin_configuration_www.hackthesec.co.in.png" /></div>
<div>
<img src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhea7QjVvwiIdl_-oS5mhbo60n5KhIh5XtfFDlOv0Fz8znuzoJId6qafnlIwv5WfrDPSs9kJkd4z3ISzNfX_mCtXsbXznnRjXeUS8Ntya4dQdOo6ZyYHTMZ5c67Y_SfvSB2tAXt8557eVTd/s640/webmin_useradmin_www.hackthesec.co.in.png" /></div>
<div>
<span style="color: #222222; font-family: verdana, geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span></div>
<div>
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></div>
</div>

How to install webmin on CentOS/Redhat 7

Install webmin on CentOS 7 Webmin is a web-based interface for system administration for Unix. Using any modern web browser, you can se...

How to set gurb2 password in RHEL7/Centos7

<div dir="ltr" style="text-align: left;" trbidi="on">
<h1 class="entry-title" style="background-color: white; box-sizing: border-box; font-family: Roboto, sans-serif; line-height: 50px; margin: 0px 0px 7px; word-wrap: break-word;">
<span style="color: #990000; font-size: large;"><u>Set Gurb2 Password In Linux</u></span></h1>
<div>
<div style="background-color: white; box-sizing: border-box; color: #222222; font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px; margin-bottom: 26px;">
How to reset the root password but its security vulnerable to Linux.Anyone who have physical access to system can easily reset the root password. So we can avoid it by using the setting up of the grub password.</div>
<div style="background-color: white; box-sizing: border-box; color: #222222; font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px; margin-bottom: 26px;">
To set the grub password we set <b>superuser</b> name and password in grub configuration file.</div>
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For this we have to modify the <strong style="box-sizing: border-box;">grub2.conf</strong> file in <strong style="box-sizing: border-box;">/etc/</strong> directory</div>
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<span style="color: #222222;">firstly we have to create a password by using </span><span style="box-sizing: border-box;"><b style="box-sizing: border-box;"><span style="color: red;">grub2-mkpasswd-pbkdf2</span></b></span><b style="box-sizing: border-box; color: #222222;"> </b><span style="color: #222222;">command copy the password and enter password twice as follows</span></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-size: large;"><span style="color: #333333; font-family: 'Trebuchet MS', sans-serif; line-height: 19.2px;"><span style="line-height: 19.2px;"><span style="color: white; line-height: 15.6px;">[root@hackthesec]# </span></span></span><span style="background-color: transparent; line-height: 15.6px;"><span style="color: white; font-family: Trebuchet MS, sans-serif;">grub2-mkpasswd-pbkdf2</span></span></span></pre>
<pre class="xtypo_info" style="background: url("assets/shadow.png") 50% 100% repeat-x rgb(245, 245, 245); border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-shadow: rgb(204, 204, 204) 0px 0px 3px; box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 13px; font-stretch: normal; line-height: 1.42857; margin-bottom: 10px; overflow: auto; padding: 9.5px; tab-size: 4; text-shadow: rgb(255, 255, 255) 0px 1px 0px; white-space: pre-wrap; word-break: break-all; word-wrap: break-word;">Enter password:

Reenter password:

PBKDF2 hash of your password is: grub.pbkdf2.sha512.10000.19074739ED80F115963D984BDCB35AA671C24325755377C3E9B014D862DA6ACC77BC110EED41822800A87FD3700C037320E51E9326188D53247EC0722DDF15FC.C56EC0738911AD86CEA55546139FEBC366A393DF9785A8F44D3E51BF09DB980BAFEF85281CBBC56778D8B19DC94833EA8342F7D73E3A1AA30B205091F1015A85</pre>
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<span style="color: #222222;">Then open </span><span style="box-sizing: border-box;"><b style="box-sizing: border-box;">/etc/grub2.conf</b></span><span style="color: #222222;"> file and locate </span><span style="box-sizing: border-box;"><b style="box-sizing: border-box;">### BEGIN /etc/grub.d/10_linux ###</b></span></div>
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section type the code as follows here I used the username is <strong style="box-sizing: border-box;">root</strong> that is our choice</div>
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<span style="box-sizing: border-box;"><b style="box-sizing: border-box;">set superusers "root"</b></span><b style="box-sizing: border-box;">export superusers</b></div>
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<b style="box-sizing: border-box;"></b></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: Trebuchet MS, sans-serif; font-size: large;"><span style="line-height: 15.6px;">password_ pbkdf2 root</span></span></pre>
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<span style="font-size: large;"><b style="box-sizing: border-box;"></b></span></div>
<pre class="xtypo_info" style="background: url("assets/shadow.png") 50% 100% repeat-x rgb(245, 245, 245); border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-shadow: rgb(204, 204, 204) 0px 0px 3px; box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 13px; font-stretch: normal; line-height: 1.42857; margin-bottom: 10px; overflow: auto; padding: 9.5px; tab-size: 4; text-shadow: rgb(255, 255, 255) 0px 1px 0px; white-space: pre-wrap; word-break: break-all; word-wrap: break-word;">grub.pbkdf2.sha512.10000.19074739ED80F115963D984BDCB35AA671C24325755377C3E9B014D862DA6ACC77BC110EED41822800A87FD3700C037320E51E9326188D53247EC0722DDF15FC.C56EC0738911AD86CEA55546139FEBC366A393DF9785A8F44D3E51BF09DB980BAFEF85281CBBC56778D8B19DC94833EA8342F7D73E3A1AA30B205091F1015A85</pre>
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<b style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222;">T</strong><strong style="box-sizing: border-box; color: #222222;">hat’s It, Now You can reboot and </strong><strong style="box-sizing: border-box; color: #222222;"><b style="box-sizing: border-box;">Press "e" on Grub Menu</b></strong><strong style="box-sizing: border-box; color: #222222;">, It will ask you for the password.</strong></b></div>
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How to set gurb2 password in RHEL7/Centos7

Set Gurb2 Password In Linux How to reset the root password but its security vulnerable to Linux.Anyone who have physical access to syst...

Apache HTTP Secure Server Configuration for CentOS 7

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<span style="font-size: x-large;"><u>Apache HTTP Secure Server Configuration</u></span></h1>
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Securing the <a href="http://www.hackthesec.co.in/search/label/Apache" target="_blank">Apache</a> server is one of the most important tasks of the webmaster. In this example, we will show you in this Apache HTTP Secure Server Configuration tutorial  how to use <a href="http://www.hackthesec.co.in/search/label/SSL%20Encryption" target="_blank">ssl keys</a> with your Apache web server on your installed <a href="http://www.hackthesec.co.in/search/label/centos7" target="_blank">Centos7 </a>system. this method should also work on all Fedora or Redhat based  systems</div>
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<strong style="box-sizing: border-box;"><span style="color: #0b5394; font-size: large;"><u><br />Create Certificates</u></span></strong></div>
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<strong style="box-sizing: border-box;"><span style="color: #222222; font-size: 15px; font-weight: normal;">Change to the following directory:</span></strong></div>
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<strong style="box-sizing: border-box;"></strong></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-size: large;"><span style="background-color: transparent; line-height: 15.6px;"><span style="color: white; font-family: "courier new" , "courier" , monospace;">[root@server /]#</span></span><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;"> cd /etc/pki/tls/certs</span></span></span></pre>
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<strong style="box-sizing: border-box;"><span style="color: #222222; font-size: 15px; font-weight: normal;">Run the following command to make server key file:</span></strong></div>
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<strong style="box-sizing: border-box;"></strong></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-size: large;"><span style="background-color: transparent; line-height: 15.6px;"><span style="color: white; font-family: "courier new" , "courier" , monospace;">[root@server certs]#</span></span><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;"> make server.key</span></span></span></pre>
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<span style="color: #222222; font-size: 15px;">Remove passphrase from private key:</span></div>
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<strong style="box-sizing: border-box;"></strong></div>
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<strong style="box-sizing: border-box;"><u><span style="color: #0b5394;">Writing RSA key</span></u></strong></div>
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<span style="box-sizing: border-box;"></span><br />
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="box-sizing: border-box;"><span style="font-size: large;"><span style="background-color: transparent; line-height: 15.6px;"><span style="color: white; font-family: "courier new" , "courier" , monospace;">[root@server certs]#</span></span><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px; white-space: pre;"> openssl rsa -in server.key -out server.key
Enter pass phrase for server.key:
writing RSA key</span></span></span></pre>
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</span></div>
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<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; font-size: 15px;"><span style="color: #0b5394;"><u>Generate CSR key file</u></span></strong></strong></div>
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<strong style="box-sizing: border-box;"><span style="color: #0b5394;"><u><strong style="box-sizing: border-box; font-size: 15px;"></strong></u></span></strong></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-size: large;"><span style="background-color: transparent; line-height: 15.6px;"><span style="color: white; font-family: "courier new" , "courier" , monospace;">[root@server certs]#</span></span><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;"> </span><span style="background-color: transparent; line-height: 15.6px;"><span style="color: white; font-family: "courier new" , "courier" , monospace;">make server.csr</span></span></span></pre>
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<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; font-size: 15px;"><strong style="box-sizing: border-box;"><u><span style="color: #0b5394;">Sign the key and make Expiration days:</span></u></strong></strong></strong></div>
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<strong style="box-sizing: border-box;"><u><span style="color: #0b5394;"><strong style="box-sizing: border-box; font-size: 15px;"></strong></span></u></strong></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: "courier new" , "courier" , monospace; font-size: large;"><span style="line-height: 15.6px;">[root@server certs]# openssl x509 -in server.csr -out server.crt -req -signkey server.key -days 1000
Signature ok
subject=/C=US/ST=AL/L=OLI/O=Hackthesec/OU=Hackthesec Tutorial/CN=server.hackthesec.co.in/emailAddress=info@hackthesec.co.in
Getting Private key
[root@server certs]#</span></span>
</pre>
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<strong style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"><u><span style="color: #0b5394;">Configure SSL keys with Apache </span></u></strong><br />
<strong style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"></strong><br />
<div style="-webkit-text-stroke-width: 0px; color: black; font-family: 'Times New Roman'; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px;">
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<pre style="-webkit-text-stroke-width: 0px; background-attachment: scroll; background-color: #3c3c3c; background-image: none; background-position: 0px 0px; background-repeat: repeat; border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: black; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; margin: 0px 0px 20px; orphans: auto; outline: 0px; overflow: auto; padding: 20px; text-align: left; text-indent: 0px; text-transform: none; vertical-align: baseline; widows: 1; word-spacing: 0px;"><span style="color: white; font-family: "courier new" , "courier" , monospace; font-size: large;"><span style="line-height: 15.6px;">[root@server certs]# yum -y install httpd mod_ssl</span></span>
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</span></div>
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<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; font-size: 15px;"><strong style="box-sizing: border-box;"><u><span style="color: #0b5394;">Enable  en Start  apache</span></u></strong></strong></strong></div>
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<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; font-size: 15px;"><strong style="box-sizing: border-box;"></strong></strong></strong></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: "courier new" , "courier" , monospace; font-size: large;"><span style="line-height: 15.6px;">[root@server certs]# systemctl start httpd.service
[root@server certs]# systemctl enable httpd.service</span></span></pre>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjaF_VliP7YXsKU9BtdT6xWsUhATC1FrREY7WQLVAEBFGbooXXIDR0l1BNAAJD51j3uS8bJVnfAHIvQvP4_JsNH_h6WC8grUAKsmJsXgpp_-J1Mp5FLHLwuIKm6BpOOnxNoiLbyWkPfqY2K/s1600/httpd_checking_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjaF_VliP7YXsKU9BtdT6xWsUhATC1FrREY7WQLVAEBFGbooXXIDR0l1BNAAJD51j3uS8bJVnfAHIvQvP4_JsNH_h6WC8grUAKsmJsXgpp_-J1Mp5FLHLwuIKm6BpOOnxNoiLbyWkPfqY2K/s1600/httpd_checking_www.hackthesec.co.in.png" /></a></div>
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<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"><strong style="box-sizing: border-box;"><br /></strong></strong></strong></div>
<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; font-size: 15px;"><strong style="box-sizing: border-box;"><span style="color: #0b5394;">Configure  ‘/etc/httpd/conf.d/ssl.conf’</span></strong></strong></strong></div>
<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"><span style="font-weight: normal;">Your ssl.conf should be like this:</span></strong></strong></div>
<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"></strong></strong></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-size: large;"><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">[root@server certs]# </span><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;">mv /etc/httpd/conf.d/ssl.conf  /etc/httpd/conf.d/ssl.conf.orig

</span></span><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">[root@server certs]# </span><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;">vi /etc/httpd/conf.d/ssl.conf</span></span></span></pre>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="font-size: 15px; line-height: 15.6px;">[root@server certs]# vi /etc/httpd/conf.d/ssl.conf
SSLPassPhraseDialog builtin
SSLSessionCache shmcb:/var/cache/mod_ssl/scache(512000)
SSLSessionCacheTimeout 300
SSLRandomSeed startup file:/dev/urandom 256
SSLRandomSeed connect builtin
SSLCryptoDevice builtin
<VirtualHost *:443>
DocumentRoot "/var/www/html"
ServerName 127.0.0.1:443
ErrorLog logs/ssl_error_log
TransferLog logs/ssl_access_log
LogLevel warn
SSLEngine on
SSLProtocol all -SSLv2
SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM:+LOW
SSLCertificateFile /etc/pki/tls/certs/server.crt
SSLCertificateKeyFile /etc/pki/tls/certs/server.key
<Files ~ "\.(cgi|shtml|phtml|php3?)$">
SSLOptions +StdEnvVars
</Files>
<Directory "/var/www/cgi-bin">
SSLOptions +StdEnvVars
</Directory>
SetEnvIf User-Agent ".*MSIE.*" \
nokeepalive ssl-unclean-shutdown \
downgrade-1.0 force-response-1.0
CustomLog logs/ssl_request_log \
"%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"
</VirtualHost>
</span></span></pre>
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<span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="font-size: 15px; line-height: 15.6px;"><br /></span></span></div>
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Save  and exit</div>
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<strong style="box-sizing: border-box;"><span style="color: #0b5394;">Restart Apache  </span></strong></div>
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<strong style="box-sizing: border-box;"><span style="color: #0b5394;"><strong style="box-sizing: border-box; font-size: 15px;"></strong></span></strong></div>
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Check if  the ports 80 and  443 are listening:</div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-size: large;"><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;"> </span></span><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">[root@server certs]# </span><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">netstat -tulpen | grep :80</span></span></pre>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="font-size: 15px; line-height: 15.6px;">
</span><span style="line-height: 15.6px;"><span style="font-size: large;"> </span></span></span><span style="font-size: large;"><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">[root@server certs]# </span><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">netstat -tulpen | grep :443</span></span></pre>
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<span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="font-size: 15px; line-height: 15.6px;"><br /></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjD8TEbDobkGb93B9nWhlOLZ4EBMgAL8kBOEh2soQ0i7GCT22EQtP53bm4sCcYF-xSSz1n8VT5Phb6Gl3lc7T9zh2D-M23cIaKLWPZ7W6CbOmfHHg2S9Zlhr49uZDYxK3NVrRRttG5PgxOj/s1600/checking_the_server_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjD8TEbDobkGb93B9nWhlOLZ4EBMgAL8kBOEh2soQ0i7GCT22EQtP53bm4sCcYF-xSSz1n8VT5Phb6Gl3lc7T9zh2D-M23cIaKLWPZ7W6CbOmfHHg2S9Zlhr49uZDYxK3NVrRRttG5PgxOj/s1600/checking_the_server_www.hackthesec.co.in.png" /></a></div>
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<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"><span style="font-weight: normal;"><br />Allow the ports 80 and 443 via Iptables:</span></strong></strong></div>
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<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"></strong></strong></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-size: large;"><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">[root@server certs]# </span><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;">vi /etc/sysconfig/iptables
-A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 443 -j ACCEPT</span></span></span></pre>
<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"><span style="font-weight: normal;">If you are using  Firewalld  please  do :</span></strong></strong></div>
<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"></strong></strong></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-size: large;"><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">[root@server certs]# </span><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;">firewall-cmd --permanent --add-port=80/tcp
</span></span><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">[root@server certs]# </span><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;">firewall-cmd --permanent --add-port=443/tcp</span></span></span></pre>
<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"><span style="font-weight: normal;">And restart or reload the firewalls :</span></strong></strong></div>
<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"></strong></strong></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-size: large;"><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">[root@server certs]# </span><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;">service iptables restart
Or 
</span></span><span style="color: white; font-family: "courier new" , "courier" , monospace; line-height: 15.6px;">[root@server certs]# </span></span><span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="line-height: 15.6px;"><span style="font-size: large;">firewall-cmd --reload</span></span><span style="font-size: 15px; line-height: 15.6px;">
</span></span></pre>
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<span style="color: white; font-family: "courier new" , "courier" , monospace;"><span style="font-size: 15px; line-height: 15.6px;"><br /></span></span></div>
<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"><span style="font-weight: normal;">Open the browser and Check  </span><strong style="box-sizing: border-box;">https://server.hackthesec.co.in</strong></strong></strong></div>
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<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;"><strong style="box-sizing: border-box; color: #222222; font-size: 15px;"><strong style="box-sizing: border-box;"><br />Certificate View</strong></strong></strong></div>
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<div style="background-color: white; box-sizing: border-box; font-family: Verdana, Geneva, sans-serif; line-height: 26px; margin-bottom: 26px; text-align: center;">
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></div>
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Apache HTTP Secure Server Configuration for CentOS 7

Apache HTTP Secure Server Configuration Securing the Apache server is one of the most important tasks of the webmaster. In this ex...