From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joel Newkirk <netfilter@newkirk.us>
Subject: Re: snmptraps incomming on udp port 162 REDIRECT to 4162 not working?
Date: Tue, 5 Nov 2002 12:43:11 -0500
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To: Ben Russo <ben@umialumni.com>, netfilter@lists.netfilter.org

On Tuesday 05 November 2002 11:16 am, Ben Russo wrote:
>
> I tried the following:
>
> iptables -t nat -p udp -m udp --dport 162 -j REDIRECT --to-ports 4162

iptables -t nat -A PREROUTING -p udp --dport 162 -j REDIRECT --to-ports 4=
162

should redirect all incoming for port 162 to port 4162.  You needed to sp=
ecify=20
what chain in the nat table (IE, PREROUTING to catch them as they first h=
it=20
the firewall).  If it still fails then make sure you are allowing packets=
 for=20
port 4162 through the INPUT chain of the filter table, since that's where=
=20
they should pass, and the dport they should indicate.

j