Alright... on further examination it seems to have nothing to do with DNS
lookups.

All I have to do is telnet from a Win95 machine within the firewall to a
remote host (via IP masq).. it gives me a 'login:' prompt.  Then if I just
wait a few seconds, and the connection locks up.

Not only that, but the entire connection to the internet is locked up at
that point.  The linux box can't connect to any sites, and any current
connections lock up.  The situation persists until I kill the dip daemon and
start another modem connection.

Note this linux box otherwise has no problems whatsoever.  It can connect to
hosts inside and outside of the firewall.  Everything works.  Even the IP
masq works for a few seconds.  The IP masq _used to_ work just peachy for a
long time.

So I'm wondering... I remember reading something about a patch for ipfwadm
having to do with timeouts.  I haven't been able to locate a site for the
patch which still exists.  And I haven't found any information on the bug
it's actually patching.

Am I suffering some sort of insanely short time out problem?

ipfwadm -M -l -e reveals a time out of 15 minutes.

I'm running kernel 2.0.33.

I don't know what else to list.  Any ideas?


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