Subject: Re: 10-minute timeout on idle ssh logins
To: David Brownlee <abs@netbsd.org>
From: James K. Lowden <jklowden@schemamania.org>
List: netbsd-help
Date: 12/26/2003 15:15:29
On Thu, 25 Dec 2003 12:05:30 +0000 (UTC), David Brownlee <abs@netbsd.org>
wrote:
> 	Are you running NAT with LARGE_NAT set?
> 	You'll need to change DEF_NAT_AGE (in sys/netinet/ip_nat.h)
> 	I believe this is intended to be fixed for 1.6.2

Dunno.  The NAT box has:

NetBSD 1.6 (GENERIC) #0: Mon Sep  9 08:27:06 UTC 2002    
autobuild@tgm.daemon.org

If I'm going to go to the trouble of cross-compiling a kernel, which one
do you recommend?  The conservative thing would obviously be to check out
the 1.6 sources.  Can the 1.6 userland use anything else (e.g. 1.6.1)?  

Thanks, David.  

-jkl

> 
> On Wed, 24 Dec 2003, James K. Lowden wrote:
> 
> > When my lady friend logs in over ssh -- you don't often see those
> > words in that particular order -- her connection times out if it's
> > idle for 10 minutes:
> >
> > $ time ssh j@www.schemamania.org
> > j@www.schemamania.org's password:
> > Last login: Wed Dec 24 06:35:17 2003 from dsl254-115-186.n
> > NetBSD 1.6 (GENERIC) #0: Sun Sep 8 19:43:40 UTC 2002
> >
> > Welcome to NetBSD!
> >
> > j@www.schemamania.org$
> > [time passes...]
> > Read from remote host www.schemamania.org: Connection reset by peer
> > Connection to www.schemamania.org closed.
> >
> > real    9m59.674s
> > user    0m0.207s
> > sys     0m0.021s
> >
> > Setting debuggin on with -vvv, I get this, which doesn't make anything
> > clearer to me:
> >
> > debug1: channel_free: channel 0: client-session, nchannels 1
> > debug3: channel_free: status: The following connections are open:
> >   #0 client-session (t4 r0 i0/0 o0/0 fd 4/5)
> >
> > debug3: channel_close_fds: channel 0: r 4 w 5 e 6
> > Read from remote host www.schemamania.org: Connection reset by peer
> > Connection to www.schemamania.org closed.
> > debug1: Transferred: stdin 0, stdout 0, stderr 112 bytes in 902.2
> > seconds debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.1
> > debug1: Exit status -1
> >
> > Question: Did tcp/ip or ssh shut down the session?  Or possibly
> > NAT/ipf?
> >
> > I see from the archives that others have had similar problems, but I
> > don't see any definitive answer.  In case it matters, her /usr/bin/ssh
> > is provided by FreeBSD 5.0.
> >
> > Thanks.
> >
> > --jkl
> >
> >
> 
> -- 
> 		David/absolute          -- www.netbsd.org: No hype required --