CSF

CSF (Config Server Firewall) is an iptables management script and logging daemon.

Command Line Options

csf -h - get help for CSF command line options

csf -g IP_Address - Look (grep) for an IP address to see if it's blocked

csf -a IP_Address - permanently allows the specified IP address

csf -d IP_Address "Your comment goes here" - Blocks the specified IP address, comment tells why

csf -ra - Restart CSF and LFD (leave off the a to restart just CSF)

CSF and LFD settings are stored in:
/etc/csf

csf.conf - main CSF configuration file