Sometimes it becomes necessary to work on a remote server not through the console, but through the remote desktop. The remote access system VNC (Virtual Network Computing) comes to the rescue. Consider how to install, configure and connect to the server.
Installation
Update information about repositories:
sudo apt-get update
Update the system components and restart the server:
sudo apt-get upgradereboot
Let’s get to the installation.
sudo apt-get install --no-install-recommends ubuntu-desktop gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal vnc4server
This process is not very fast, as more than 200 megabytes will be downloaded.
To complete the initial configuration of the VNC server, run the command:
vncserver
The program will ask for a password and its confirmation to connect via VNC, and will also create scripts.
Setup
Under the setting, it should be understood that the commands and scripts that should be executed when the server is started will be indicated. To do this, you need to edit the ~/.vnc/xstartup file. The VNC server, by default, is initialized on tcp port 5901, which is called the “Display port”, in the VNC documentation it is referred to as “:1”. VNC itself allows you to run multiple instances of :2 – 5902, :3 – 5903, and so on.
I am leaving the service on port 5901:
vncserver -kill :1
We edit the settings file, for this we open it in any text editor, for example nano:
nano ~/.vnc/xstartup
Add 4 lines to the end of the file:
gnome-panel &gnome-settings-daemon &metacity &nautilus &
The general form of the file should look like this
We start with the command:
vncserver
It can be seen that the server started on tcp port 5901.
We connect to the server using any VNC client, such as Remmina.
Select the protocol – VNC. Specify the server address and the port through a colon, in the particular case 10.10.2.7:5901. And click on the “Connect” button
The program will ask you to enter a password.
Here is the result.
Important! If firewall protection is used, then you should add an allow rule for the connection:
iptables -A INPUT -p tcp --dport 5901 -j ACCEPTiptables-save
It is also important to remember that the allow rule must be for each running server instance in the form of:
iptables -A INPUT -p tcp --dport 59XX -j ACCEPTiptables-save
XX – port number :2 – 02, :3 – 03, :10 – 10.
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