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To assign multiple external IP addresses to a WRT54G/S, you have to push a multiline variable into the rc_firewal nvram variable (non-volatile ram):


nvram set rc_firewal="
iptables -t nat -I PREROUTING -d x.y.z.1 -j DNAT --to-destination 192.168.1.x
iptables -t nat -I PREROUTING -d x.y.z.2 -j DNAT --to-destination 192.168.1.x
"
nvram commit


This will protect the changes against being lost when the router is reset.

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