58 lines
3.6 KiB
HTML
58 lines
3.6 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" 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="dc.language" scheme="rfc1766" 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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<meta name="dc.date" scheme="iso8601" content="2005-09-06" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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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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<title>Virtual private network</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<a name="vpncon"></a>
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<h3 id="vpncon">Virtual private network</h3>
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<p>A virtual private network (VPN) allows your company to extend
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its private intranet over a public network. It is based on creating virtual
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secure tunnels between hosts or gateways connected to the public network.
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To participate in a secure tunnel or VPN connection, the VPN tunnel end point
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must implement a compatible suite of VPN protocols. VPN provides the following
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security functions:</p>
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<ul>
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<li>Data origin authentication to verify that each datagram was originated
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by the claimed sender.</li>
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<li>Data integrity to verify that the contents of a datagram were not changed
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either deliberately or due to random errors.</li>
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<li>Data encryption to ensure message text confidentiality.</li>
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<li>Replay protection to ensure that an attacker cannot intercept data and
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play it back at some later date.</li>
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<li>Key management to ensure that your VPN policy can be implemented throughout
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the extended network with little or no manual configuration.</li></ul>
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<p>The Universal Connection builds a VPN connection to IBM®, in some scenarios, to ensure that the
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information sent and received between your iSeries™ server and IBM is safe (for example, VPN encrypts and
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authenticates data). The VPN technologies used by the Universal Connection
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include L2TP, IKE, and IPSec. See the following topics for details, <a href="../rzaja/rzajal2tpprotocol.htm">Layer 2 Tunnel Protocol (L2TP)</a>, <a href="../rzaja/rzajaimplicitike.htm">Implicit IKE</a>, and <a href="../rzaja/rzajaipsec.htm">IP Security (IPSec) protocols</a>. For some of
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the connectivity options, the Universal Connection uses L2TP alone for those portions of the
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connection that do not require encryption. For example, if you are connecting
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from one partition to another partition and then out across the Internet to IBM,
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the Universal Connection strictly uses L2TP between the partitions and then uses L2TP protected
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by IPSec for the second portion of the connection (that portion requiring
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encryption).</p>
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<p>For more information, see the <a href="../rzaja/rzajagetstart.htm">Virtual private networking</a> topic.</p>
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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