ive got a qube 3 looking to install security software. what i would like to do is see what users are loged in, how long and what they are doing. i would also like users to be able to login via vpn and have a "shared" folder (like in windows network neighborhood) that they can pull up to view files...
You can use the "ps" command to see what users are doing.
that will show you a lot of server activity.
If you want to see the exact keystrokes of your users, you can get TTYsnoop but if they are connected through a secure protocal such as SSH then you can snoop on them. Telnet on the other hand will work.