# xIssue the following command to list the existing iptables policy rules: <b><code><span style="pointer-events: none;cursor: default;color:#3366CC;font-size:1.2em;">iptables -L</span></code></b>. Were there already iptables policy rules that already existed by default?# Issue the following command to reset the iptables policy rules: <b><code><span style="pointer-events: none;cursor: default;color:#3366CC;font-size:1.2em;">iptables -F</span></code></b>. Issue a command to list the existing iptables policy rules to verify they have been reset.

==== Packet Filtering with iptables Setting Default Policy and Policy Exceptions ====

==== Flushing and Backing up iptables Rules ====