Iptables Command Line Tool: Difference between revisions

From NovaOrdis Knowledge Base
Jump to navigation Jump to search
No edit summary
Line 4: Line 4:


=Overview=
=Overview=
<tt>iptables</tt> always targets the "filter" table by default. In order to change the target table, use the <tt>-t <table-name></tt> options.





Revision as of 22:30, 5 January 2016

Internal

Overview

iptables always targets the "filter" table by default. In order to change the target table, use the -t <table-name> options.


Commands

List Rules

iptables -L -nv --line-numbers

The command list all rules in the selected chain. If no chain is selected, all chains are listed.

The command applies to the specified table ("filter" is the default). If you need to list rules from a table other than "filter", use -t (example -t nat).

The command is often used with the -n option, in order to avoid long reverse DNS lookups.