Iptables

Hi, I'm facing some problems with iptables rules, the idea is to redirect request from the port 83 of the FW to port 80 from a LAN machine. The rule is as follows: $IPTABLES -t nat -A PREROUTING -p tcp -s $LAN_NET --dport 83 -j DNAT \ --to $SERVER_IP:80 Running the command "iptables -nvL -t nat" i see the rule is matched but doesn't work in the browser. I'll keep waiting for comments Best regards Santiago