From: Rick Kennell <kennell@ecn.purdue.edu>
To: netfilter@lists.netfilter.org
Subject: port-based filtering of IPsec packets?
Date: 23 Jul 2003 14:35:19 -0500 [thread overview]
Message-ID: <1058988918.6068.29.camel@insomnia.ecn.purdue.edu> (raw)
I'm curious how I might do port-based filtering of IPsec packets with
iptables. Presently, filtering IPsec-encrypted packets is an
all-or-nothing proposition because iptables can't look inside an ESP
section to get the port info. It can only filter ESP packets based on
the SPI. Actually, I'm not even sure how I'd get iptables to do
address-based filtering of IPsec packets.
Why would I want this? Well, I might want to do opportunistic IPsec and
allow arbitrary parties to interact with my host, but I still want to
make sure that only selected services are made available.
I noticed that a similar thing was asked over on the FreeBSD side of the
world:
http://www.bsdforums.org/forums/showthread.php?threadid=11725
Somehow, I don't expect the iptables solution to be quite so easy.
--
Rick Kennell <kennell@ecn.purdue.edu>
Purdue University Department of Electrical and Computer Engineering
next reply other threads:[~2003-07-23 19:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-23 19:35 Rick Kennell [this message]
2003-07-23 20:42 ` port-based filtering of IPsec packets? Ramin Dousti
2003-07-23 21:11 ` Garcia Ruiz
2003-07-23 21:23 ` Rick Kennell
2003-07-24 1:08 ` Ramin Dousti
2003-07-24 20:50 ` Rick Kennell
2003-07-24 21:36 ` Ramin Dousti
2003-07-23 21:30 ` James A. Pattie
2003-07-24 21:37 George Vieira
2003-07-25 6:14 ` Rick Kennell
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