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5. Objectives
This HOWTO explains how to use the libiptc library included in the iptables package. This document can show you how to use short C or C++ programs to query the internal structure of the firewalling code, to check chains and rules, packet and byte counters, and in a second phase, if you are a little "brave" , to modify them.
You can find the latest version of this document at Querying libiptc HOWTO.html .
If you have suggestions to help make this document better, please submit your ideas to me at the following address: leonardo@opalsoft.net .
While I wrote this HOWTO, I developed a simple bandwith meter using user-defined chains to get the data to be measured. This idea was conceived looking at monitor.pl , a simple perl program for bandwith measurement, written by Stef Coene at http://www.docum.org . I recommend this site to people interested in bandwidth control and measurement.
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