Hack The Sec-Leading Resource Of Linux Tutorial: vnc

How to install VNC server on Centos 7

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<span style="background-color: white; color: #222222; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; font-size: 16px; line-height: 30px;"><b>VNC </b>server is used to connect and control desktop environment of the server from remote clients. <b>VNC viewer</b> is used on remote computer to connect the server .</span><br />
<span style="background-color: white; color: #222222; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; font-size: 16px; line-height: 30px;">In the article we can learn about how to install vnc server on <a href="http://www.hackthesec.co.in/search/label/Centos">centos 7</a> . we can use the default packages provided in the <a href="http://www.hackthesec.co.in/search/label/Centos">centos </a>yum repository.</span><br />
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<span style="background-color: white; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; line-height: 30px;"><strong style="font-family: Verdana, Geneva, sans-serif; line-height: 19.2px;"><a class="titlex" href="http://www.hackthesec.co.in/2016/01/how-to-setup-x11vnc-server-on-ubuntu.html" style="display: block; font-family: 'Open Sans', serif, sans-serif; font-stretch: normal; line-height: 1.4em; margin: 5px 0px 0px; max-height: 36px; overflow: hidden; text-decoration: none;"></a></strong></span><br />
<strong style="line-height: 19.2px;"><strong style="line-height: 19.2px;"><a class="titlex" href="http://www.hackthesec.co.in/2016/01/how-to-setup-x11vnc-server-on-ubuntu.html" style="display: inline; font-stretch: normal; line-height: 1.4em; margin: 5px 0px 0px; max-height: 36px; overflow: hidden; text-decoration: none;"><span style="color: red; font-family: Helvetica Neue, Arial, Helvetica, sans-serif; font-size: x-large;">How to Setup X11VNC Server on Ubuntu & LinuxMint</span></a></strong></strong><br />
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<span style="background-color: white; color: #0b5394; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; font-size: 24px; line-height: 28px;">Install vnc server on centos 7</span><br />
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<span style="color: #222222;">Let’s start. If you don’t have desktop environment ( </span><b><span style="color: magenta;">X windows</span></b><span style="color: #222222;"> ), issue the below commands one by one to install. It will take few minutes to install packages.</span></div>
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<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@hackthesec ~]# yum check-update<br />[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# yum groupinstall "X Window System"<br />[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# yum </span><span style="color: lime;">install gnome-classic-session gnome-terminal</span><span style="color: white;"> nautilus-open-terminal control-center liberation-mono-fonts</span><br /><span style="color: white;">[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# </span><span style="color: lime;">unlink /etc/systemd/system/default.target</span><br /><span style="color: white;">[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# ln -sf /lib/systemd/system/graphical.target /etc/systemd/system/default.target</span><br /><span style="color: white;">[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# </span><span style="color: lime;">reboot</span></code><br />
<span style="color: #222222;">After reboot, you will get Centos 7 desktop .</span></div>
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Now start installing VNC packages.<br />
<strong>Step 1 :</strong> Issue the below command to install VNC package.</div>
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<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@</span><span style="color: white;">hackthesec </span><span style="color: white;"> ~]# yum install </span><span style="color: lime;">tigervnc-server</span><span style="color: white;"> -y</span></code><br />
<strong style="color: #222222;">Step 2 </strong><strong style="color: #222222;">:</strong><span style="color: #222222;"> Create a file </span><span style="color: red;"><strong>vncserver@:1.service</strong> in <strong>/etc/systemd/system/</strong></span><span style="color: #222222;"> directory by copying example config file </span><strong><span style="color: red;">/lib/systemd/system/vncserver@.service</span></strong></div>
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<b style="color: #222222;"><br /></b><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# cp /lib/systemd/system/</span><span style="color: lime;">vncserver@.service</span><span style="color: white;"> /etc/systemd/system/vncserver@:1.service</span></code><br />
<strong style="color: #222222;">Step 3 </strong><strong style="color: #222222;">:</strong><span style="color: #222222;"> Now open </span><strong><span style="color: red;">/etc/systemd/system/vncserver@:1.service</span></strong><span style="color: #222222;"> file and replace</span><user style="color: #222222;">with your username .<br />Find these lines ..</user></div>
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<user><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: lime;">ExecStart=/sbin/runuser -l <USER> -c "/usr/bin/vncserver %i"</span><span style="color: white;">PIDFile=/home/<USER>/.vnc/%H%i.pid</span></code><br /><span style="color: #222222;">Replace ( Considering username as john )</span></user></div>
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<user><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">ExecStart=/sbin/runuser -l john -c "/usr/bin/vncserver %i"</span><br /><span style="color: lime;">PIDFile=/home/john/.vnc/%H%i.pid</span></code><br /><span style="color: #222222;">If you are creating for root user .</span></user></div>
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<user><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">ExecStart=/sbin/runuser -l </span><span style="color: lime;">root </span><span style="color: white;">-c "/usr/bin/vncserver %i"</span><br /><span style="color: white;">PIDFile=/root/.vnc/%H%i.pid</span></code><br /><strong style="color: #222222;">Step 4 </strong><strong style="color: #222222;">:</strong><span style="color: #222222;"> Reload systemd for changes.</span></user></div>
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<user><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@krizna ~]# systemctl </span><span style="color: lime;">daemon-reload</span></code><br /><strong style="color: #222222;">Step 5 </strong><strong style="color: #222222;">:</strong><span style="color: #222222;"> Create VNC password for the user .</span></user></div>
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<user><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# </span><span style="color: lime;">vncpasswd</span></code><br /><strong style="color: #222222;">Step 6 </strong><strong style="color: #222222;">:</strong><span style="color: #222222;"> Enable and start the service using the below commands.</span><br /><span style="color: #222222;">Enable service at startup ( Permanent ).</span></user></div>
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<user><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# systemctl enable </span><span style="color: lime;">vncserver@:1.service</span></code><br /><span style="color: #222222;">Start the service .</span></user></div>
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<user><br /><code style="background-color: #0e0e0e; border-radius: 5px; color: white; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;">[root@hackthesec ~]# systemctl start vncserver@:1.service</code><br /><strong>Step 7 </strong><strong>:</strong> Allow VNC service in firewall.</user></div>
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<user><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# firewall-cmd --permanent --add-service vnc-server<br />[root@</span><span style="color: white;">hackthesec </span><span style="color: white;">~]# </span><span style="color: lime;">systemctl restart firewalld.service</span></code><br /><span style="color: #222222;">Now you can able to connect VNC server using IP and Port ( Eg : 192.168.1.10:1 )</span></user></div>
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<user><br /></user></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMdCA7z_GFilu5Cs6j1a6cNCfeRBU3p5fmQqh08t1azT8VXWB5B-Cebvg0hfJCONu105aS9WZ9c52PuLLB7I60Rbix8_c3ubsTK42qcp45t_NFzjCbgAcRbeRbKoYwyIYVx5Tv9S8tDuIn/s1600/install-vnc-server-centos-7_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMdCA7z_GFilu5Cs6j1a6cNCfeRBU3p5fmQqh08t1azT8VXWB5B-Cebvg0hfJCONu105aS9WZ9c52PuLLB7I60Rbix8_c3ubsTK42qcp45t_NFzjCbgAcRbeRbKoYwyIYVx5Tv9S8tDuIn/s1600/install-vnc-server-centos-7_www.hackthesec.co.in.jpg" /></a></div>
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<user><span style="color: #222222;">You can use VNC client like </span><a href="http://www.tightvnc.com/" rel="nofollow" style="color: #0f4884; text-decoration: none;" title="TightVNC">Tightvnc viewer</a><span style="color: #222222;"> and </span><a href="https://www.realvnc.com/" rel="nofollow" style="color: #0f4884; text-decoration: none;" title="realvnc viewer">Realvnc viewer</a><span style="color: #222222;"> to connect Server.</span><br /><span style="color: #222222;">For additional users create files with different ports ( Refer Step 2 )</span><strong><span style="color: red;">vncserver@:2.service</span></strong><span style="color: #222222;"> by copying example config file and continue the steps 3,4,5 and 6 by replacing service name. Please make sure you logged in as that particular user for creating vnc password ( Step 5 ).</span></user></div>
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Additional Commands :</h3>
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<user></user></div>
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 To stop VNC service .<br />
<code style="background-color: #0e0e0e; border-radius: 5px; color: white; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;">[root@hackthesec ~]# systemctl stop vncserver@:1.service</code><br />
 To disable VNC service from startup ( permanent ).</div>
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<code style="background-color: #0e0e0e; border-radius: 5px; color: white; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;">[root@hackthesec ~]# systemctl disable vncserver@:1.service</code><br />
To stop firewall ( For troubleshooting ).</div>
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<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@krizna ~]# systemctl</span><span style="color: lime;"> stop firewalld.service<br /><br /></span><a href="http://www.hackthesec.co.in/" style="color: #999999; text-decoration: none;">Hack The Security</a><br style="color: lime;" /><a href="https://www.twitter.com/hackthesecurity" style="color: #999999; text-decoration: none;">Hack The Security Twitter</a><br style="color: lime;" /><a href="http://facebook.com/htsecu" style="color: #999999; text-decoration: none;">Hack The Security Facebook</a></code></div>
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<user><br /></user></div>
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How to install VNC server on Centos 7

VNC server is used to connect and control desktop environment of the server from remote clients. VNC viewer is used on remote computer to ...

How to Setup X11VNC Server on Ubuntu & LinuxMint

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<h2 class="title single-title title20" style="-webkit-transition: opacity 0.24s ease-in-out; background-color: white; border: 0px; font-family: 'Roboto Slab'; font-size: 28px; line-height: 38px; margin: 0px 0px 5px; opacity: 1; outline: 0px; padding: 0px; text-align: center; transition: opacity 0.24s ease-in-out; vertical-align: baseline; visibility: visible;">
<span style="color: #cc0000;">X11VNC Server on Ubuntu,LinuxMint & Debian</span></h2>
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<div style="background-color: white; border: 0px; font-family: 'Roboto Slab'; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
<span style="border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border: 0px; font-size: inherit; font-weight: 700; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">X11VNC</span> is the popular VNC server for creating remote desktop connection and access remote desktop. It works will almost all the desktop environment available for Ubuntu and Debian based systems. Using remote desktop connection we can connect any remote system and access graphical user interface and work. We can use any available <b>vnc viewer</b> like tight vnc viewer, real vnc viewer or ultra vnc viewer.</div>
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<b>X11VNC</b> can be a better remote support software for you. This tutorial will help you to setup x11vnc server on your <b><a href="http://www.hackthesec.co.in/search/label/Ubuntu" target="_blank">Ubuntu</a>, <a href="http://www.hackthesec.co.in/search/label/LinuxMint" target="_blank">LinuxMint</a> & <a href="http://www.hackthesec.co.in/search/label/Debian" target="_blank">Debian</a></b> system and connect using vnc viewer from client system.</div>
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<span style="color: #0b5394; font-size: 24px; font-weight: bolder; line-height: 34px;">Install X11VNC</span></div>
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X11vnc packages are available under default repositories, So just update default repositories and install.</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;">$ sudo </span><span style="color: lime;">apt-get</span><span style="color: white;"> update
$ sudo apt-get </span><span style="color: lime;">install x11vnc</span><span style="color: white; font-size: 0.9em;">
</span></pre>
<h2 class="heading1" style="-webkit-transition: opacity 0.24s ease-in-out; background-color: white; border: 0px; font-family: 'Roboto Slab'; font-size: 24px; font-weight: bolder; line-height: 34px; margin: 45px 0px 12px; opacity: 1; outline: 0px; padding: 0px; transition: opacity 0.24s ease-in-out; vertical-align: baseline; visibility: visible;">
<span style="color: #0b5394;">Create Password</span></h2>
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Now create a password to connect using vnc viewer from client system.</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;">$ </span><span style="color: lime;">x11vnc</span><span style="color: white;"> -storepasswd

Enter VNC password: </span><orange><span style="color: lime;">*********</span></orange><span style="color: white;">
Verify password: </span><orange><span style="color: lime;">********* </span></orange><orange style="color: orange;"> </orange><span style="color: white;">  
Write password to /home/rahul/.vnc/passwd?  [y]/n </span><orange><span style="color: lime;">y</span></orange><span style="color: white;">
Password written to: /home/rahul/.vnc/passwd</span><span style="color: white; font-size: 0.9em;">
</span></pre>
<h2 class="heading1" style="-webkit-transition: opacity 0.24s ease-in-out; background-color: white; border: 0px; font-family: 'Roboto Slab'; font-size: 24px; font-weight: bolder; line-height: 34px; margin: 45px 0px 12px; opacity: 1; outline: 0px; padding: 0px; transition: opacity 0.24s ease-in-out; vertical-align: baseline; visibility: visible;">
Start X11VNC Server</h2>
<div style="background-color: white; border: 0px; font-family: 'Roboto Slab'; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
After successful installation of x11vnc server on your system. Let’s start it using following command. Change the parameters as per your setup.</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">$ sudo x11vnc -auth guess -forever -loop -noxdamage -repeat -rfbauth /home/rahul/.vnc/passwd -rfbport 5900 -shared<span style="font-size: 0.9em;">
</span></pre>
<h2 class="heading1" style="-webkit-transition: opacity 0.24s ease-in-out; background-color: white; border: 0px; font-family: 'Roboto Slab'; font-size: 24px; font-weight: bolder; line-height: 34px; margin: 45px 0px 12px; opacity: 1; outline: 0px; padding: 0px; transition: opacity 0.24s ease-in-out; vertical-align: baseline; visibility: visible;">
<span style="color: #0b5394;">Setup AutoStart on Boot</span></h2>
<div style="background-color: white; border: 0px; font-family: 'Roboto Slab'; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
Finally setup the auto start of x11vnc server on system boot. Create a<span style="border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border: 0px; font-size: inherit; font-weight: 700; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">x11vnc.conf</span> file under /etc/init/ directory using following content.</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">$ sudo vi /etc/init/x11vnc.conf<span style="font-size: 0.9em;">
</span></pre>
<pre class="pretty" style="background: none 0px 0px repeat scroll rgb(240, 240, 240); border-left-color: rgb(116, 183, 63); border-left-width: 3px; border-radius: 5px; border-style: none none none solid; line-height: 1.5em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 8px 20px 8px 18px; vertical-align: baseline;"># description "Start <span style="color: lime;">x11vnc</span> on system boot"

description "<span style="color: lime;">x11vnc</span>"

start on runlevel [2345]
stop on runlevel [^2345]

console log

respawn
respawn limit 20 5

exec /usr/bin/x11vnc -auth guess -forever -loop -noxdamage -repeat -rfbauth /home/rahul/.vnc/passwd -rfbport 5900 -shared<span style="font-size: 0.9em;">
</span></pre>
</div>
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How to Setup X11VNC Server on Ubuntu & LinuxMint

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