Date: Wed, 17 Jan 2001 11:55:19 -0500 (EST) From: Darren Henderson <darren@bmv.state.me.us> To: freebsd-questions@freebsd.org Subject: pppd, modem, app oddity Message-ID: <Pine.A41.4.21.0101171131440.24320-100000@katahdin.bmv.state.me.us>
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I've never seen anything quite like this one, curious if anyone else has and
if they have found a work around. I have an application running on a machine
behind the firewall that is causing the modem used by the firewall to
connect to my ISP to go into retrain.
I have a freebsd 4.2-stable machine acting as a firewall and masquarading
for the machines behind it. It connects to my ISP via a USR v.everything
modem using pppd. Everything works great, no problems with this set up or
past incarnations of it for the last 4 years.
Inside the firewall there are a number of windows machines and macs. They
have no problems doing what they need to do (other then bandwidth - ISDN
coming in a few weeks hopefully). Quake 3 Team Arena was recently installed
on a W2K machine. When that machine attempts to connect to a quake server
outside my network, more often then not, will apparently hang after its set
up. What is actually occuring is that it gets to the same portion of the set
up (just after the snapshot, usually when switcing to a new map), and the
modem on the firewall goes into retrain, and stays there, until the w2k
machine is told to end the game, at which point the firewall modem drops out
of retrain and continues on like nothing happened.
I am a bit suprised that an application, one not even on the firewall, can
cause the modem on the firewall to behave this way. There must be something
in the traffic or some characteristic of the traffic generated that is
causing the modem fits. Anyone seen this kind of behavior before? Is there a
way to keep it from happening? Rather nebulous I know. I need to get a
sniffer on the line and see whats going on, though that may not help if the
cause is contained in the inbound traffic it would never get to a level I
can observe.
________________________________________________________________________
Darren Henderson darren@bmv.state.me.us
darren.henderson@state.me.us
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