From: Anders Fugmann <afu@fugmann.dhs.org>
To: Rob Sterenborg <rsterenborg@xs4all.nl>
Cc: netfilter@lists.netfilter.org
Subject: Re: "iptables: Invalid argument" with kernel 2.4.20
Date: Tue, 17 Dec 2002 03:19:28 +0100 [thread overview]
Message-ID: <3DFE89B0.7030607@fugmann.dhs.org> (raw)
In-Reply-To: <GOEDLKDBKHLHGAKAGFGKEEJJLLAA.rsterenborg@xs4all.nl>
Rob Sterenborg wrote:
> Could someone tell me when I would want to use "-m udp" ? I searched a
> bit and found a lot of scripts using it but didn't find anything that
> explains it.
The '-m' flag means match extentions. '--protocol udp' implicit loads
the match extentions for the udp protocol, and thus:
'iptables -p udp', is the same as iptables -p udp -m udp'. See 'match
extentions' in the iptables manpage for more information.
Regards
Anders Fugmann
--
Author of FIAIF
FIAIF is an intelligent firewall
http://fiaif.fugmann.dhs.org
next prev parent reply other threads:[~2002-12-17 2:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-16 16:25 "iptables: Invalid argument" with kernel 2.4.20 cees-bart
2002-12-16 17:42 ` Rob Sterenborg
2002-12-17 2:19 ` Anders Fugmann [this message]
2002-12-16 19:35 ` Joel Newkirk
2002-12-17 9:55 ` cees-bart
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