netdev - Re: IFB and iptables

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] [day] [month] [year] [list]

Message-ID: <1306874007.5439.13.camel@andybev-desktop>
Date:	Tue, 31 May 2011 21:33:27 +0100
From:	Andrew Beverley <andy@...ybev.com>
To:	Jérôme Poulin <jeromepoulin@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: IFB and iptables

On Wed, 2011-05-25 at 18:21 -0400, Jérôme Poulin wrote:
> Hi,
> 
> I'm trying to convert my IMQ based script to use the IFB device instead.
> Things appear to work quite right however the u32 classifier isn't
> aware of any connection tracking and I was wondering if it is at all
> possible to use match from iptables like layer7 when you use the IFB
> device?

It depends where you are attaching your IFB device. Unlike IMQ, IFB can
only be hooked on an interface (IMQ can be hooked between iptables
chains). Therefore, if you are doing it on the ingress interface,
traffic will not have been connection-tracked. Off the top of my head,
it should work on egress though.

Andy


--
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