I have been searching all around for an exact download of the VPN client software for accessing a CheckPoint VPN server on Ubuntu 12.10.
Most are useless information and guides with no helpful download links, and some links that seemed to be useful (as indicated by Google search snippets) are just dead links.
Please advise where exactly we can download the correct client, and how we can install it, and run it successfully to connect to the VPN server.
Best Answer
Short answer: A standalone SSL Network Extender (SNX) installer is not available from the official Check Point downloads.
SNX as a classical SSL VPN client is a thin client which is supposed to be installed over a session when you first connect from your web browser to the VPN gateway. You first authenticate to the VPN gateway using a normal web form. Then, after your agreement SNX is downloaded and installed using a Java Applet.
This means that the primary place from which is SNX distributed to client machines is the Check Point VPN gateway. Till the gateway version R75.20 there is an SNX update hotfix available on Check Point downloads with links in sk65210 - SSL Network Extender E75. Later gateway versions (R75.30 till the current R77.30) contain the up-to-date version of SNX available at the time of the gateway release but I think that SNX was not substantially updated during these gateway releases.
To be able to use SNX with the gateway there must be the correct license there (Mobile Access Blade). Also the gateway must be configured appropriately. See Mobile Access R77 Versions Administration Guide.
Further information:
Ubuntu 12.10 is officially supported by SNX but its support by Canonical ended more than a year ago!