From: "Mark E. Donaldson" <markee@bandwidthco.com>
To: 'Carlos Villegas' <villegas@math.gatech.edu>,
'Jason Opperisano' <Jopperisano@alphanumeric.com>
Cc: netfilter@lists.netfilter.org
Subject: RE: Question about REJECT in FORWARD rule
Date: Wed, 11 Aug 2004 18:32:44 -0700 [thread overview]
Message-ID: <SERVER74ZDgC81TbdkS00000016@server7.bandwidthco.com> (raw)
In-Reply-To: <20040811200045.GA6472@uglabng.math.gatech.edu>
Really? I thought "-j REJECT --reject-with tcp-reset" would always do the
right thing, even without specifying --syn (of course, it wouldn't be a bad
idea to specify it anyway). I have several systems running fine without the
--syn option explicitly mentioned. Could any of the "core"
guys say if my assumption is wrong?
Carlos
My views are this: If you are going to reset a TCP connection, it is best to
do so at the earliest possible moment of a TCP session, preferably after the
initial syn of the three-way handshake. When I use "-j REJECT --reject-with
tcp-reset" it is always in response to a NEW (thus syn) packet. Perhaps Mr.
Stone will weigh in on this. If Chris Brenton is listening in, I would like
to hear his views on this as well.
next prev parent reply other threads:[~2004-08-12 1:32 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-11 16:30 Question about REJECT in FORWARD rule Jason Opperisano
2004-08-11 17:37 ` Maxime Ducharme
2004-08-11 20:00 ` Carlos Villegas
2004-08-12 1:32 ` Mark E. Donaldson [this message]
2004-08-12 12:46 ` Dick St.Peters
-- strict thread matches above, loose matches on Subject: below --
2004-08-11 20:24 Jason Opperisano
2004-08-11 19:01 Jason Opperisano
2004-08-11 15:44 Jason Opperisano
2004-08-11 16:14 ` Maxime Ducharme
2004-08-11 14:49 Maxime Ducharme
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