ok here is a little bit on what I am trying to do. I am logged into a saolaris 9 server and telnet to another server to run an application that sits on the second unix / linux server. This application can sit idle for an hour to two and any given time. During this time the telnet session timesout and the users have to relog in. Now granted most of us would just login again but the users are at remote locations and never had this issues until we moved the servers off the local network. We have checked all our firewalls, switches and routers and there not booting the connection. Now if I have one of them use putty or secureCRT with anti-idle settings going they don't timeout. The problem is not all locations have a windows box to install those applications they use standard telnet from a unix terminal. My question is after reading a bunch of stuff is how do I send a nop or NO-OP from a standard telnet term on a unix box? Any help would be great on this or if you know another way I am all ears.

Thanks