40 lines
3.1 KiB
HTML
40 lines
3.1 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Use packet rules to secure TCP/IP traffic" />
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<meta name="abstract" content="Packet rules, which are the combination of IP filtering and network address translation (NAT), act like a firewall to protect your internal network from intruders." />
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<meta name="description" content="Packet rules, which are the combination of IP filtering and network address translation (NAT), act like a firewall to protect your internal network from intruders." />
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<meta name="DC.Relation" scheme="URI" content="rzamvtcpcomponent.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="tcppacketrule" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Use packet rules to secure TCP/IP traffic</title>
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</head>
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<body id="tcppacketrule"><a name="tcppacketrule"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Use packet rules to secure TCP/IP traffic</h1>
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<div><p>Packet rules, which are the combination of IP filtering and network address translation (NAT), act like a firewall to protect your internal network from intruders.</p>
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<p>IP filtering lets you control what IP traffic to allow into and out of your network. Basically, it protects your network by filtering packets according to rules that you define. NAT, on the other hand, allows you to hide your unregistered private IP addresses behind a set of registered IP addresses. This helps to protect your internal network from outside networks. NAT also helps to alleviate the IP address depletion problem, since many private addresses can be represented by a small set of registered addresses.</p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzamvtcpcomponent.htm" title="You can take advantage of several TCP/IP security components that enhance your network security and add flexibility.">TCP/IP security components</a></div>
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</div>
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</div>
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</body>
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</html>
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