<snip> > *nat # Manipulate nat table > > :PREROUTING ACCEPT [0:0] > :POSTROUTING ACCEPT [0:0] > :OUTPUT ACCEPT [0:0] > -A PREROUTING -t nat -p tcp --dport 26 -j REDIRECT --to-port 25 > > COMMIT Thanks Christopher, I had updated my rules to *nat :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] -A PREROUTING -t nat -p tcp --dport 26 -j REDIRECT --to-port 25 COMMIT # Completed When I did a restart, there is an error. Flushing firewall rules: [ OK ] Setting chains to policy ACCEPT: nat mangle filter [ OK ] Unloading iptables modules: [ OK ] Applying iptables firewall rules: iptables-restore v1.3.5: Line 52 seems to have a -t table option. Error occurred at line: 52 Try `iptables-restore -h' or 'iptables-restore --help' for more information. [FAILED] Line 52 is -A PREROUTING -t nat -p tcp --dport 26 -j REDIRECT --to-port 25 Regards