179 lines
2.8 KiB
HTML
179 lines
2.8 KiB
HTML
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>Objectives</TITLE
|
|
><META
|
|
NAME="GENERATOR"
|
|
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
|
|
"><LINK
|
|
REL="HOME"
|
|
TITLE="Querying libiptc HOWTO"
|
|
HREF="index.html"><LINK
|
|
REL="PREVIOUS"
|
|
TITLE="Credits"
|
|
HREF="credits.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="What is libiptc?"
|
|
HREF="whatis.html"></HEAD
|
|
><BODY
|
|
CLASS="SECT1"
|
|
BGCOLOR="#FFFFFF"
|
|
TEXT="#000000"
|
|
LINK="#0000FF"
|
|
VLINK="#840084"
|
|
ALINK="#0000FF"
|
|
><DIV
|
|
CLASS="NAVHEADER"
|
|
><TABLE
|
|
SUMMARY="Header navigation table"
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TH
|
|
COLSPAN="3"
|
|
ALIGN="center"
|
|
>Querying libiptc HOWTO</TH
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="left"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="credits.html"
|
|
ACCESSKEY="P"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="80%"
|
|
ALIGN="center"
|
|
VALIGN="bottom"
|
|
></TD
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="right"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="whatis.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><DIV
|
|
CLASS="SECT1"
|
|
><H1
|
|
CLASS="SECT1"
|
|
><A
|
|
NAME="OBJECT">5. Objectives</H1
|
|
><P
|
|
>This HOWTO explains how to use the <EM
|
|
>libiptc</EM
|
|
> library
|
|
included in the <EM
|
|
>iptables</EM
|
|
> 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 <SPAN
|
|
CLASS="QUOTE"
|
|
>"brave"</SPAN
|
|
>, to modify
|
|
them.</P
|
|
><P
|
|
>You can find the latest version of this document at
|
|
<A
|
|
HREF="http://opalsoft.net/qos/libiptc/qlibiptc.html"
|
|
TARGET="_top"
|
|
>Querying libiptc HOWTO.html</A
|
|
>.</P
|
|
><P
|
|
>If you have suggestions to help make this document better, please submit
|
|
your ideas to me at the following address:
|
|
<A
|
|
HREF="mailto:leonardo@opalsoft.net"
|
|
TARGET="_top"
|
|
>leonardo@opalsoft.net</A
|
|
>.</P
|
|
><P
|
|
>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 <B
|
|
CLASS="COMMAND"
|
|
>monitor.pl</B
|
|
>, a simple perl program for bandwith
|
|
measurement, written by Stef Coene at
|
|
<A
|
|
HREF="http://www.docum.org"
|
|
TARGET="_top"
|
|
>http://www.docum.org</A
|
|
>.
|
|
I recommend this site to people interested in bandwidth control and
|
|
measurement.</P
|
|
></DIV
|
|
><DIV
|
|
CLASS="NAVFOOTER"
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"><TABLE
|
|
SUMMARY="Footer navigation table"
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="credits.html"
|
|
ACCESSKEY="P"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="index.html"
|
|
ACCESSKEY="H"
|
|
>Home</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="whatis.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>Credits</TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
> </TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
>What is libiptc?</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |