Date: Wed, 25 Jul 2007 14:50:26 -0500 From: JD Bronson <jbronson@sixcompanies.com> To: mlaier@freebsd.org Cc: Jordan Gordeev <jgordeev@dir.bg>, freebsd-questions@freebsd.org Subject: Re: pf and keep/modulate state on 6.2 Message-ID: <200707251950.l6PJoRxk029389@smtp.sixcompanies.com> In-Reply-To: <200707252055.50780.max@love2party.net> References: <200702252202.l1PM2r46003312@cheyenne.sixcompanies.com> <200702261159.l1QBx46X006755@cheyenne.sixcompanies.com> <46A1EA91.5000306@dir.bg> <200707252055.50780.max@love2party.net>
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At 08:55 PM 7/25/2007 +0200, Max Laier wrote: >On Saturday 21 July 2007, Jordan Gordeev wrote: > > > I'm replying to an old and long-forgotten thread to report my recent > > findings. > > There's a bug in PF with modulate/synproxy state. Modulate/synproxy > > state modulate sequence numbers, but don't modulate sequence numbers in > > TCP SACK options. Some firewalls block TCP segments with sequence > > numbers in the SACK option pointing outside the window, which causes > > connection stalls. The bug was fixed in OpenBSD with revision 1.509 of > > src/sys/net/pf.c about an year and a half ago. The bug is present in > > FreeBSD-STABLE. A fix for the bug was imported in FreeBSD-CURRENT with > > the big import of PF from OpenBSD 4.1. > > I'm CC-ing Max to notify him of the bug present in -STABLE and to ask > > him to deal with the issue by either porting the fix from OpenBSD, or > > by documenting that modulate/synproxy state is broken. > >Good catch - sorry for the delay. Here is the diff (almost verbatim from >OPENBSD_3_8). Please test and report back. I plan to commit this to >RELENG_6 in a bit. > >-- >/"\ Best regards, | mlaier@freebsd.org >\ / Max Laier | ICQ #67774661 Max - 3.8? Cant we get a bit closer and more up-to-date as far as staying with pf and openbsd? I know pf changed - especially for OBSD 4.1 and it would be nice to be CLOSER than 3.8 ? -JD
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