From: Oleg <sov.rbsec@gmail.com>
To: netfilter@lists.netfilter.org
Subject: Re: Iptables rule on span traffic
Date: Sat, 21 Apr 2007 23:33:41 +0400 [thread overview]
Message-ID: <200704212333.41889.sov.rbsec@gmail.com> (raw)
In-Reply-To: <E8AFFEFDBE97C94E9297963F0527A07B01DFAED8@pmi00exf00.us.packetmotion.com>
AFAIK pcap library gets traffic before iptables rule processing (because it's
promiscous mode), so snort and tcpdump (and any other tool which uses pcap)
continues to see any traffic (even 'blocked by iptables', because its rules is
applied after interface pass).
> Anyway, here is my situation.
> I have fwsnort generate iptables rule (based on snort IDS rules) which are
> running on a machine with two interfaces. One of the interfaces (eth1) ?is
> connected to a SPAN port that mirrors traffic on part of our network, this
> interface is in promiscuous mode. The other interface (eth0) is a regular
> addressable interface. For some reason, the iptables rules seem to have no
> effect on traffic seen by the SPAN port.
--
Best regards, Oleg
prev parent reply other threads:[~2007-04-21 19:33 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-20 19:13 Iptables rule on span traffic Krishnamoorthy (Siva) Sivakumar
2007-04-21 13:46 ` Oleg
2007-04-21 15:54 ` Jorge Davila
2007-04-21 16:23 ` Cedric Blancher
2007-04-21 19:44 ` Krishnamoorthy (Siva) Sivakumar
2007-04-21 21:20 ` Pascal Hambourg
2007-04-23 3:48 ` Krishnamoorthy (Siva) Sivakumar
2007-04-23 5:25 ` Martijn Lievaart
2007-04-23 5:41 ` Krishnamoorthy (Siva) Sivakumar
2007-04-23 5:44 ` Martijn Lievaart
2007-04-23 16:53 ` Krishnamoorthy (Siva) Sivakumar
[not found] ` <016c01c78593$061fc2e0$0302a8c0@southern>
[not found] ` <E8AFFEFDBE97C94E9297963F0527A07B01DFBA0D@pmi00exf00.us.packetmotion.com>
[not found] ` <007301c787a6$13fdceb0$6501a8c0@southern>
2007-04-26 2:21 ` Krishnamoorthy (Siva) Sivakumar
[not found] ` <be4ffce60704260256j5cd06e93o6aeb512cb5fd36a1@mail.gmail.com>
2007-04-26 16:15 ` Krishnamoorthy (Siva) Sivakumar
2007-04-21 19:33 ` Oleg [this message]
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