Subject: Re: IPF state and spurious blocks
To: Alan Barrett <apb@iafrica.com>
From: Wolfgang Rupprecht <wolfgang@wsrcc.com>
List: tech-net
Date: 05/28/1999 00:52:46
Alan Barrett writes:
> - ipf would be willing to accept TCP sequence numbers between
> (N+2800-2048) and (N+2800+2048), but this packet fails the
> test, so ipf blocks this packet.
Thanks! I didn't realize ipf had a sequence window that it tested the
packet against. In my case blocking the out-of-order packet with a
rule that sent a tcp-restart back really messed the connection up.
-wolfgang
--
Wolfgang Rupprecht <wolfgang@wsrcc.com> http://www.wsrcc.com/wolfgang/
DGPS signals via the Internet http://www.wsrcc.com/wolfgang/gps/dgps-ip.html