Iptables

Packages

Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-f/Unpacked/Failed-cfg/Half-inst/t-aWait/T-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name                       Version                    Description
+++-==========================-==========================-====================================================================
ii  iptables                   1.3.8.0debian1-1ubuntu2    administration tools for packet filtering and NAT

Config files

• /etc/default/iptables

See also Hosts.deny