hi i want to check the error and the recommendadtions in my iptables rules

here is

Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT all -- anywhere anywhere state NEW
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT tcp -- anywhere anywhere tcp spt:http
ACCEPT tcp -- anywhere anywhere tcp spt:imap
ACCEPT tcp -- anywhere anywhere tcp spt:domain
ACCEPT tcp -- anywhere anywhere tcp spt:bootps
ACCEPT tcp -- anywhere anywhere tcp spt:https
LOG all -- anywhere anywhere LOG level warning
ACCEPT tcp -- 192.168.1.0/24 anywhere tcp dpt:smtp
ACCEPT tcp -- anywhere anywhere tcp dpt:smtp state NEW
DROP tcp -- anywhere anywhere tcp flags:!FIN,SYN,RST,ACK/SYN state NEW

Chain FORWARD (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
DROP tcp -- anywhere anywhere tcp spt:31337 dpt:31337

Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:bootps
ACCEPT tcp -- anywhere anywhere tcp dpt:http
ACCEPT tcp -- anywhere anywhere tcp dpt:domain
ACCEPT tcp -- anywhere anywhere tcp dpt:https
ACCEPT tcp -- anywhere anywhere tcp spt:http state RELATED,ESTABLISHED
ACCEPT tcp -- 192.168.1.0/24 anywhere tcp dpt:smtp
DROP tcp -- anywhere anywhere tcp spt:31337 dpt:31337

Apart from the firewall ruleset, can you please specify the role of this box ? We got to do the auditing part on basis of the role fixed for this box. Please be also specific about the nos of interfaces you have at this box & specify type of networks attached to them.

I expect that reviewing or auditing with these inputs would be rather more effective further.