So once you’ve got the server set up (and of course you’ve tested it to make sure it can boot back up from a reboot or power failure), how do you remotely connect to it?
There are 2 main options: GUI (Graphical User Interface) or CLI (Command Line Interface). Also for the sake of this article, I will mention Ubuntu-only, but the same general ideas work on any Linux-based system.
Finding Your Linux System’s IP Address
For either method, you will need to find your computer’s local Internet Protocol (IP) address. If you have a sidebar, it may show up there, or you can open your network manager “Connection Information” and view it there. If you have not done so already, set up a static IP address so that this does not change when you reboot your Linux computer.
In the example above, the static IP address is 10.0.2.15.
Remote Control via GUI
Ubuntu and most Gnome-based Linux systems use VNC, or Virtual Network Computing protocol, for graphical remote control. To configure this service, which is disabled by default, go to System->Preferences->Remote Desktop. This will bring up the settings panel for Remote Desktop:
I’ve configured the correct settings above for remote control on an unattended box. Another important aspect of this is to automatically log you in to the system on a reboot, otherwise the desktop session will not have started and you won’t be able to log in. You do this in System->Administration->Login Screen.
After enabling these two options, are you are good to go. Install a VNC client on a Windows computer (I recommend UltraVNC (it is only necessary to install the client, not the server) for ease of use. Enter the Linux computer’s IP address and hit ‘Connect’ – it will then prompt you for the password. Once you are connected, it will pop up on your screen and you’ll see this message which is shown on the desktop of the remote computer.
We’ve previously written about Remote Desktop on Ubuntu specifically how to establish simple remote access between Ubuntu and Windows and how to use the built-in Remote Desktop in Ubuntu, read on there for more detailed information.
Remote Control Via Command Line
The surest way to connect to a Linux box is to use SSH. All modern Linux systems include an SSH-client installed by default and most will also include the openssh server. Check to see you have it installed by issuing the command:
# sudo apt-get install openssh-server
It will either install the server if you don’t have it, or tell you it already is the latest version.
Once this is installed, all you need to do to connect to the computer is use any SSH client to connect to the IP address. A widely used and free one is called Putty. It works on multiple platforms and is free. Mac OS X users can also use the built-in xterm.
Execute Putty, put in your IP address and hit ‘connect’. You will then be prompted for the username and password on the system, enter it and you are in!
Which Way Is Best?
This all depends on your end goal. I find the command line to be much more stable and reliable than VNC so I typically will do everything from there, but then again I am comfortable with and grew up with the Terminal. If you are unfamiliar with Terminal commands or are perhaps used to the ease of use of the graphical interface, then VNC still works very well. It gives you an instant look at the desktop just like the computer was sitting in front of you. Do whichever method works best for you, or experiment with both! Just don’t run any commands that interrupt its network connection or you’ll have to make a trip to install a keyboard and monitor – been there and done that!
Let us know how you make out and of course let us know if you have any other preferred method of connecting to Linux from Windows!
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