130 minute telnet timeout?

[Lowell Gilbert]

"Michael R. Wayne" <wayne at staff.msen.com> writes:

> Trying to use a portmaster as a reverse console server.  If I do
>    date ; telnet portmaster ; date
> and connect to a port, the connection stays up for 2 hours and
> 10 minutes, then gets
>    Connection closed by foreign host.
> 
> Given this, I suspected the portmaster.  But other people do not
> see the problem.  Today, I tried a telnet from a Windows box and 
> it stayed up for over 4 hours (at which point I killed it).
> 
> So, this suggests that FreeBSD 4.x is doing something.  A quick
> browse through the source code for telnet does not suggest anything.
> Any ideas?  There is no NAT involved.

TCP keepalives?