From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
To: netfilter@vger.kernel.org
Subject: Re: fwmark iptables/ip routing interaction question
Date: Sat, 17 May 2008 12:49:11 +0200 [thread overview]
Message-ID: <482EB827.8010608@plouf.fr.eu.org> (raw)
In-Reply-To: <482E56C1.2070508@alust.homeunix.com>
Alexei Ustyuzhaninov a écrit :
> Pascal Hambourg wrote:
>>
>> SNAT should work on packets creating a new connection (i.e. in the
>> state NEW).
>
> Yes, really! The SYN packet goes out through the right interface with
> the right source address, SYN/ACK comes back and that's all, nothing
> will happen more.
This looks like a filtering issue causing the reply packet to be
dropped. Check your iptables 'filter' rules and that source validation
by reversed path is disabled for that interface
(/proc/sys/net/ipv4/conf/<interface>/rp_filter=0).
> I just want a simple thing: to send mail via one provider and all other
> traffic via the other provider
You may be able to specify the desired source address for outgoing
connections if your mail application allows it.
next prev parent reply other threads:[~2008-05-17 10:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-07 14:36 fwmark iptables/ip routing interaction question pthyseba
2008-05-07 15:04 ` Jan Engelhardt
2008-05-11 16:23 ` Alexei Ustyuzhaninov
2008-05-11 17:39 ` Jan Engelhardt
2008-05-11 17:50 ` Alexei Ustyuzhaninov
2008-05-16 15:03 ` Pascal Hambourg
2008-05-17 3:53 ` Alexei Ustyuzhaninov
2008-05-17 10:49 ` Pascal Hambourg [this message]
2008-05-17 12:37 ` Alexei Ustyuzhaninov
2008-05-17 23:26 ` Pascal Hambourg
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