From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Drage <nickd@funkyjesus.org>
Subject: Re: Tightening up outgoing traffic
Date: Tue, 15 Oct 2002 15:31:47 +0100
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In-Reply-To: <1034687894.8681.53.camel@Wiggum>; from list@laasby.com on Tue, Oct 15, 2002 at 03:18:14PM +0200
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On Tue, Oct 15, 2002 at 03:18:14PM +0200, Kjetil Andreas Laasby wrote:
> Problably because yahoo.com lies in your local DNS cache or on an cache
> server behind your firewall.
> 
> add
> iptables -A OUTPUT -p tcp --destination-port domain -j ACCEPT
> iptables -A OUTPUT -p udp --destination-port domain -j ACCEPT

Note the rules for tcp and udp here, it's worth opening both up in case your
DNS query needs a large reply.

> You should also open up RELATED ICMP to minimize delay for errors.

Seconded.

-- 
FunkyJesus System Administration Team