From: Kevin Buhr <buhr@telus.net>
To: Florian Weimer <fw@deneb.enyo.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Stateless dropping of packets
Date: 01 Apr 2003 14:50:39 -0800 [thread overview]
Message-ID: <87d6k5ltmo.fsf@saurus.asaurus.invalid> (raw)
In-Reply-To: <87he9ilz05.fsf@deneb.enyo.de>
Florian Weimer <fw@deneb.enyo.de> writes:
>
> Is it possible to drop packets, preferably using 2.4 iptables, before
> the packet triggers updates of some caches (e.g. the route cache)?
If you DROP the packet in a PREROUTING chain, that should work. Since
the "filter" table doesn't have a PREROUTING chain, you need to use a
table that does, like the "mangle" table. For example:
iptables -t mangle -A PREROUTING -s 10.0.0.0/8 -j DROP
should drop everything with a source in 10.0.0.0/8 without touching
the routing cache.
--
Kevin <buhr@telus.net>
next prev parent reply other threads:[~2003-04-01 22:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-01 20:54 Stateless dropping of packets Florian Weimer
2003-04-01 22:50 ` Kevin Buhr [this message]
2003-04-02 15:02 ` Florian Weimer
2003-04-02 17:00 ` Kevin Buhr
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