Peter is a Linux network admin. As a knowledgeable security consultant, he turns to you to look for
help on a firewall. He wants to use Linux as his firewall and use the latest freely available version
that is offered. What do you recommend?
Select the best answer.

A.
Ipchains

B.
Iptables

C.
Checkpoint FW for Linux

D.
Ipfwadm

Explanation:

Ipchains was improved over ipfwadm with its chaining mechanism so that it can have multiple
rulesets. However,it isn’t the latest version of a free Linux firewall. Iptables replaced ipchains and
is the latest of the free Linux firewall tools. Any Checkpoint firewall is not going to meet Jason’s
desire to have a free firewall. Ipfwadm is used to build Linux firewall rules prior to 2.2.0. It is a
outdated version.