Re: "iptables: Invalid argument" with kernel 2.4.20

[Anders Fugmann <afu@xxxxxxxxxxxxxxx>]

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