77 lines
5.7 KiB
HTML
77 lines
5.7 KiB
HTML
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<title>IP filtering and network address translation</title>
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<body id="rzajb0-ip_packet_security_sd"><a name="rzajb0-ip_packet_security_sd"><!-- --></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">IP filtering and network address translation</h1>
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<div><p>IP filtering and network address translation (NAT) act like a firewall
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to protect your internal network from intruders.</p>
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<p>IP filtering lets you control what IP traffic to be allowed into and out
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of your network. Basically, it protects your network by filtering packets
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according to rules that you define. NAT, alternatively, allows you to hide
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your unregistered private IP addresses behind a set of registered IP addresses.
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This helps to protect your internal network from outside networks. NAT also
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helps to alleviate the IP address depletion problem, because many private
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addresses can be represented by a small set of registered addresses.</p>
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<div class="note"><span class="notetitle">Note:</span> <strong>Packet rules</strong> is the combination of IP filtering and NAT. When
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you see the term, packet rules, used in this topic, it means that the subject
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applies to both of those components.</div>
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<p>In addition to the information contained in this topic, use the online
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help available from the Packet Rules Editor in iSeries™ Navigator. The iSeries Navigator
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online help offers tips and techniques for making the most of packet rules,
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including <strong>How do I</strong> help, <strong>Tell me about</strong> help, and extensive context-sensitive
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help. </p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzajbrzajbpt.htm">Printable PDF</a></strong><br />
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Use this to view and print a PDF of this information.</li>
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<li class="ulchildlink"><strong><a href="rzajbrzajb0awhyip.htm">Scenarios: Packet rules</a></strong><br />
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Use these scenarios to learn how you can use network address translation (NAT) and IP filtering to protect your network.</li>
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<li class="ulchildlink"><strong><a href="rzajbrzajb1whatis.htm">Packet rules concepts</a></strong><br />
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Packet rules comprise both network address translation (NAT) rules and IP filtering rules. These two functions run at the IP layer of the TCP/IP stack and help protect your system against potential risks that are commonly associated with TCP/IP traffic.</li>
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<li class="ulchildlink"><strong><a href="rzajbrzajb7planningsd.htm">Plan for packet rules</a></strong><br />
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Before you connect any of your network resources to the Internet, develop a security plan and understand the potential security risks involved.</li>
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<li class="ulchildlink"><strong><a href="rzajbrzajbx1creatingnewrulessd.htm">Configure packet rules</a></strong><br />
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Read the checklist that contains an overview of the tasks you must complete to ensure that your rules work properly when activated.</li>
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<li class="ulchildlink"><strong><a href="rzajbrzajbx2managingrulessd.htm">Manage packet rules</a></strong><br />
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To maintain the security of your system and the integrity of your packet rules, periodically perform the management tasks.</li>
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<li class="ulchildlink"><strong><a href="rzajbrzajbttrouble.htm">Troubleshoot packet rules</a></strong><br />
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This topic provides troubleshooting advice for some common packet rules problems.</li>
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<li class="ulchildlink"><strong><a href="rzajbrelatedinfo.htm">Related information for packet rules</a></strong><br />
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</li>
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</ul>
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</div>
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</body>
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