Lokkit
From Bashlinux
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How to enable/disable the firewall
# lokkit --<enabled|disabled>
How to allow traffic on a particular port
# lokkit --update --high -p 80:tcp
How to allow traffic from a particualar NIC
# lokkit --trust=eth1
How to load a file with custom iptables rules
# lokkit --custom-rules=ipv4:filter:/path/to/file