Difference between revisions of "Vnc"

__NOTOC__

== VNC ==

x11vnc is reliable vnc server which doesn't take much or even all the CPU usage. To install it run:

<pre><nowiki>

# yum -y install x11vnc

</nowiki></pre>

=== VNC on demand ===

To improve the usage of VNC, it can be triggered by xinetd, a configuration file under `/etc/xinetd.d` must look like

<pre><nowiki>

service x11vnc

{

disable = no

socket_type = stream

protocol = tcp

port = 5900

wait = no

user = root

server = /usr/bin/x11vnc

server_args = -inetd -display :0 -scale 2/3 -ncache 10 -auth /var/gdm/\:0.Xauth -usepw -rfbauth /opt/bashlinux/.vnc/passwd -o /opt/bashlinux/.vnc/x11vnc.log

}

</nowiki></pre>

That means that a service with such name must be created in order to let xinetd know which service to trigger when the desired port is bind. it could be accomplished by adding it to `/etc/services`

<pre><nowiki>

# echo "x11vnc 5900/tcp" >> /etc/services

</nowiki></pre>

At the end, ensure that X server grants access to '''DISPLAY 0''' by adding at the end of the `~/.bashrc` file:

<pre><nowiki>

xhost +

</nowiki></pre>

<pre><nowiki>#!wiki important

'''Important'''

Please ensure that xinetd is installed before start VNC setup.

</nowiki></pre>

=== VNC on on demand over SSL ===

Some things that should be considered in order to get connection to a vnc terminal are:

* Iptables is set to only listen for VNC calls from server, to get connection from your terminal you need to remove the statement `-s 10.0.0.1` on `/etc/sysconfig/iptables` rule for vnc.

* To do vnc from mac use ssvnc, it is available at [[http://www.karlrunge.com/x11vnc/ssvnc.html#download]]

* add the following option at the end of the `x11vnc` command arguments

<pre><nowiki>

-ssl SAVE

</nowiki></pre>

=== Links ===

* x11vnc certificates and key management

[[http://www.karlrunge.com/x11vnc/ssl.html]]