Do you keep SSH sessions active? Or reconnect.

borjonx writes: Is it safer to log out of an SSH session, and re-establish it later, or just keep the connection open? Like many of you, I use OpenSSH to connect to my slackware LiNUX boxes remotely from LiNUX & WinXP (putty.exe) clients. At home & at work, I wonder if it would be safer to just leave the connection open (my clients are physically secured, the servers limit connections with hosts.allow).

Is it more secure to re-establish the connection over an insecure link (big bad internet) where people can sniff that handshaking, or is it more secure to just remain connected? I connect 1 to 4 times per day, most all days.