From mboxrd@z Thu Jan 1 00:00:00 1970 From: "U.Mutlu" Subject: Re: [iptables] Effect of negating multiple source or dest IPs (-s or -d) Date: Tue, 08 Nov 2011 17:19:48 +0100 Message-ID: References: Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: netfilter-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: netfilter@vger.kernel.org sim@netmess.org wrote, On 2011-11-08 17:16: >> What's the effect of this rule on a multihomed box >> (the IPs below are just some examples, not real): >> >> iptables -A INPUT ! -d 1.2.3.4,2.3.4.5 -p all -j DROP >> > > the newest version of iptables says: > > iptables v1.4.12.1: ! not allowed with multiple source or destination IP > addresses Oh, one wonders why they did so... > As it will be transformed in to two rules anyway, I'd recommend to > directly write n rules for that. But in my above case then this can't work, or can it?