[bwm-tools-tech] redirect target use

[confruo de M. <co...@ho...>]

I thought i share this with the rest, for i have been banging my head over 
it, but in the end it was pretty logical.

Trying to use a transparant proxy (frox in this example), i used to load my 
firewall.xml, and add the redirect rule manually, for i thought it should be 
somewhere under the <nat> section.

something like;iptables -t nat -I PREROUTING -s 192.168.1.0/24 -p tcp 
--dport 21 -j REDIRECT --to-ports 2121

But now in the global section i added the class

                <class name="redirect_frox_zone1">
                        <address src="192.168.1.0/24" proto="tcp" 
dst-port="21" />
                </class>

and under table filter I added

                        <table name="nat">
                                <chain name="PREROUTING">
                                        <rule target="REDIRECT --to-ports 
2121">
						redirect_frox_zone1;
                                        </rule>
                                </chain>
                        </table>

which gave me;

Chain PREROUTING (policy ACCEPT 23 packets, 4025 bytes)
pkts bytes target     prot opt in     out     source               
destination
    0     0 REDIRECT   tcp  --  *      *       192.168.1.0/24       
0.0.0.0/0           tcp dpt:21 redir ports 2121

Ow, happy days :-)

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