netdev - Re: Routing over multiple interfaces

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1288879287.2659.84.camel@edumazet-laptop>
Date:	Thu, 04 Nov 2010 15:01:27 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Patrick Schaaf <netdev@....de>
Cc:	netdev@...r.kernel.org
Subject: Re: Routing over multiple interfaces

Le jeudi 04 novembre 2010 à 13:51 +0100, Patrick Schaaf a écrit :
> > iptables -t mangle -A PREROUTING -d $EXTERNAL -m statistic --mode nth --every 2 -j MARK --set-mark 6
> 
> If statistics match is missing, a pretty good alternative I recently
> "found" is using u32 to match for a bit from the IP ID. That is a
> stateless decision, and here it probably has the theoretical advantage
> of putting all fragments of a given packet onto the same link.
> 
> iptables -t mangle -A PREROUTING ... -m u32 --u32 0x2&0x1=0x0 -j MARK
> --set-mark 6

Sure, thats a good tip/idea, but note many UDP frames have IP.id = 0



--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html