170 lines
3.4 KiB
HTML
170 lines
3.4 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>Introduction to IP Masquerading or IP MASQ</TITLE
|
|
><META
|
|
NAME="GENERATOR"
|
|
CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
|
|
REL="HOME"
|
|
TITLE="Linux IP Masquerade HOWTO"
|
|
HREF="index.html"><LINK
|
|
REL="UP"
|
|
TITLE="Introduction"
|
|
HREF="ipmasq-intro1.0.html"><LINK
|
|
REL="PREVIOUS"
|
|
TITLE="Introduction"
|
|
HREF="ipmasq-intro1.0.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="Foreword, Feedback & Credits"
|
|
HREF="ipmasq-intro1.2.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"
|
|
>Linux IP Masquerade HOWTO</TH
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="left"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="ipmasq-intro1.0.html"
|
|
ACCESSKEY="P"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="80%"
|
|
ALIGN="center"
|
|
VALIGN="bottom"
|
|
>Chapter 1. Introduction</TD
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="right"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="ipmasq-intro1.2.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><DIV
|
|
CLASS="SECT1"
|
|
><H1
|
|
CLASS="SECT1"
|
|
><A
|
|
NAME="IPMASQ-INTRO1.1"
|
|
></A
|
|
>1.1. Introduction to IP Masquerading or IP MASQ</H1
|
|
><P
|
|
>This document describes how to enable the Linux IP Masquerade feature on a
|
|
given Linux host. IP Masquerade, called "IPMASQ" or "MASQ" for short, is a form
|
|
of Network Address Translation (NAT) which allows internally connected computers
|
|
that do not have one or more registered Internet IP addresses to communicate to
|
|
the Internet via the Linux server's Internet IP address. Since IPMASQ is a
|
|
generic technology, you can connect the Linux server's internal and external
|
|
to other computers through LAN technologies like Ethernet, TokenRing, and FDDI,
|
|
as well as dialup connections line PPP or SLIP links. This document primarily
|
|
uses Ethernet and PPP connections in examples because it is most commonly used
|
|
with DSL / Cablemodems and dialup connections.</P
|
|
><P
|
|
><SPAN
|
|
CLASS="QUOTE"
|
|
>"<STRONG
|
|
>This document is intended for systems running stable Linux kernels like 2.4.x,
|
|
2.2.x, and 2.0.x preferably on an IBM-compatible PC. IP Masquerade
|
|
does work on other Linux-supported platforms like Sparc, Alpha, PowerPC, etc.
|
|
but this HOWTO doesn't cover them in as much detail. Beta kernels
|
|
such as 2.5.x, 2.3.x, 2.1.x, and ANY kernels less than 2.0.x are NOT covered
|
|
in this document. The primary reason for this is because many of the older
|
|
kernels are considered broken. If you are using an older kernel version, it
|
|
is highly advisable to upgrade to one of the stable Linux kernels before using
|
|
IP Masquerading. </STRONG
|
|
>"</SPAN
|
|
></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="ipmasq-intro1.0.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="ipmasq-intro1.2.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>Introduction</TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="ipmasq-intro1.0.html"
|
|
ACCESSKEY="U"
|
|
>Up</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
>Foreword, Feedback & Credits</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |