TIDBase

I got the client and patch from here. I used the 4.8.01.0640-k9 version with the 2.6.24-final patch.  I have tested it on Ubuntu 8.10.
 
The installation is very easy.

These are the appropriate steps for Fedora 9, OpenSuSE 10.3 and OpenSuSE 11.0. More distributions probably follow.

I'm assuming that you, or someone at your organization, has set up the Checkpoint SNX webpage. Visit that page in Linux with a Java enabled webbrowser. After you login, you will be prompted in a pop-up terminal window to enter the root password. However, after you've done this, the window will just close.