2 :PREROUTING ACCEPT [5:300]
3 :POSTROUTING ACCEPT [8:674]
5 -A PREROUTING -s ! 18.181.0.60 -i eth0 -p tcp -m tcp --dport 10003 -j DNAT --to-destination 18.181.0.60:10003
6 -A POSTROUTING -d 18.181.0.60 -o eth0 -p tcp -m tcp --dport 10003 -j SNAT --to-source 18.181.0.62
7 -A PREROUTING -s ! 18.181.0.165 -i eth0 -p tcp -m tcp --dport 10004 -j DNAT --to-destination 18.181.0.165:10003
8 -A POSTROUTING -d 18.181.0.165 -o eth0 -p tcp -m tcp --dport 10003 -j SNAT --to-source 18.181.0.62
12 :INPUT ACCEPT [366:44912]
14 :OUTPUT ACCEPT [292:53151]
15 -A FORWARD -d 18.181.0.60 -i eth0 -o eth0 -p tcp -m tcp --dport 10003 -j ACCEPT
16 -A FORWARD -d 18.181.0.165 -i eth0 -o eth0 -p tcp -m tcp --dport 10003 -j ACCEPT