Got Solaris 8 (with latest 8_Recommended patches) running on a Sun Blade 100. Mysterious thing is that on this box only (there are a couple other nearly identical machines where I don't have this problem), I'm having a very hard time keeping idle telnet sessions open. Once left unattended, the telnet session abruptly disconnects after somewhere between 10 minutes and 5 hours of idle time. I haven't been able to pinpoint what causes the variance in time, but it definitely happens each time even though the actual timing is inconsistent.
The users in question have /bin/sh as their shell and no TIMEOUT or similar environment variable set.
Any suggestions as to why these sessions are being disconnected and how to trace back the cause of the disconnect? Happens when directly connected to the machine via the local ethernet segment, remote connection via dialup and via VPN.