linux-kernel - Re: IPSEC and bridged interfaces

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Date:	Tue, 31 Oct 2006 17:19:20 +0100
From:	Joerg Platte <lists@...sa.net>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: IPSEC and bridged interfaces

Am Dienstag, 31. Oktober 2006 09:30 schrieb Jan Engelhardt:
Hi,

> Sounds like those packets are bridged rather than routed (or so it
> sounds). See if that's the case. Check
> http://www.imagestream.com/~josh/PacketFlow-new.png for details.

It looks like my router is able to re-map its IP to the corresponding private 
IP but then this packet is bridged instead of routed (or encrypted). 
Unfortunately, IPSEC routing is not listet in this image.

> You could try `ebtables -t broute -j DROP` to force all packets to be
> routed.

I tried 
ebtables -t broute -A BROUTING -p ipv4 --ip-destination 192.168.0.0/16 -j DROP
but this does not change anything (192.168.0.0/16 is my private, masqueraded 
network).  But nothing changed. I'm thinking about replacing my IPSEC VPN 
with an openvpn tunnel. Maybe then I'll have less problems.

regards,
Jörg

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