netdev - Re: [PATCH net-next v4 0/3] path mtu hardening patches

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Message-ID: <20140113224835.GA28205@breakpoint.cc>
Date:	Mon, 13 Jan 2014 23:48:35 +0100
From:	Florian Westphal <fw@...len.de>
To:	John Heffner <johnwheffner@...il.com>,
	David Miller <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	steffen.klassert@...unet.com, fweimer@...hat.com
Subject: Re: [PATCH net-next v4 0/3] path mtu hardening patches

Hannes Frederic Sowa <hannes@...essinduktion.org> wrote:
> On Mon, Jan 13, 2014 at 11:03:56PM +0100, Hannes Frederic Sowa wrote:
> > I really don't like to depend on firewalling to do that. Especially on
> > big routers one can use the routing table to protect interfaces for
> > management and thus don't need to introduce stateful firewalling to
> > realize a secure router setup which could cause performance degradation,
> > especially with lots of small and shortlived flows (e.g. UDP/DNS).
> 
> This may get better if maybe some work is put into bringing this patch
> forward: http://comments.gmane.org/gmane.linux.network/268758

Jesper Brouer is working on this.

But, why do you even need stateful firewalling for filtering?
Isn't -m socket enough?

[ sorry if you already explained, might have missed it when search
archive ]
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