Hello

I need to setup a lab. such that the users logged on to console have
full access of lan and internet but, users remotely logging(via
telnet/ssh) into the lab servers would be allowed only to access lan(
i.e. others servers in lab only) and would not be granted access to
network outside of lab, i.e. to internet.
I would use RedHat 9.0.

So how to go about doing this ???