84 lines
5.6 KiB
HTML
84 lines
5.6 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="Secure sockets" />
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<meta name="abstract" content="Currently, i5/OS supports two methods of creating secure socket applications on the iSeries. The SSL_ APIs and Global Secure Toolkit (GSKit) APIs provide communications privacy over an open communications network, which in most cases is the Internet." />
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<meta name="description" content="Currently, i5/OS supports two methods of creating secure socket applications on the iSeries. The SSL_ APIs and Global Secure Toolkit (GSKit) APIs provide communications privacy over an open communications network, which in most cases is the Internet." />
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<meta name="DC.Relation" scheme="URI" content="aconcepts.htm" />
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<meta name="DC.Relation" scheme="URI" content="cgskit.htm" />
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<meta name="DC.Relation" scheme="URI" content="cssl2.htm" />
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<meta name="DC.Relation" scheme="URI" content="ssltrouble.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="cssl" />
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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>Secure sockets</title>
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</head>
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<body id="cssl"><a name="cssl"><!-- --></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">Secure sockets</h1>
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<div><p>Currently, i5/OS™ supports two methods of creating secure socket
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applications on the iSeries™. The SSL_ APIs and Global Secure Toolkit
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(GSKit) APIs provide communications privacy over an open communications network,
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which in most cases is the Internet.</p>
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<p>These APIs allow client/server applications to communicate
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in a way that is designed to prevent eavesdropping, tampering, and message
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forgery. Both support server and client authentication and both allow an application
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to use Secure Sockets Layer (SSL) protocol. However, GSKit APIs are supported
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across all IBM<sup>®</sup> <span><img src="eserver.gif" alt="eServer" /></span> platforms, while the SSL_
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APIs only exist in the i5/OS operating system. To enhance portability across
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platforms, it is recommended that you use GSKit APIs when developing applications
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for secure socket connections.</p>
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<div class="section"><h4 class="sectiontitle">Overview of secure sockets</h4><p>Originally developed
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by Netscape, Secure Sockets Layer (SSL) protocol is a layered protocol that
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is intended to be used on top of a reliable transport such as Transmission
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Control Protocol (TCP) to provide secure communications for an application.
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A few of the many applications that require secure communications are HTTPs,
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FTPs, SMTP, and TELNETs.</p>
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<p>An SSL-enabled application typically needs
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to use a different port than an application that is not SSL-enabled. For example,
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an SSL-enabled browser accesses an SSL-enabled Hypertext Transfer Protocol
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(HTTP) server with a Universal Resource Locator (URL) that begins "HTTPs"
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rather than "HTTP." In most cases, a URL of "HTTPs" attempts to open a connection
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to port 443 of the server system instead of to port 80 that the standard HTTP
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server uses. </p>
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<p>There are multiple versions of the SSL
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protocol defined. The latest version, Transport Layer Security (TLS) Version
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1.0, provides an evolutionary upgrade from SSL Version 3.0. Both SSL_ APIs
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and the GSKit APIs support TLS Version 1.0, TLS Version 1.0 with SSL Version
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3.0 compatibility, SSL Version 3.0, SSL Version 2.0, and SSL Version 3.0 with
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2.0 compatibility. For more details on TLS Version 1.0, see <a href="http://www.rfc-editor.org" target="_blank">RFC 2246:
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"Transport Layer Security"</a><img src="www.gif" alt="Link to IETF search page" />.</p>
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</div>
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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="cgskit.htm">Global Secure ToolKit (GSKit) APIs</a></strong><br />
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Global Secure ToolKit (GSKit) is a set of programmable interfaces that allow an application to be SSL enabled.</li>
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<li class="ulchildlink"><strong><a href="cssl2.htm">SSL_ APIs</a></strong><br />
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The SSL_ APIs allow programmers to create secure socket applications
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on iSeries. </li>
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<li class="ulchildlink"><strong><a href="ssltrouble.htm">Secure socket API error code messages</a></strong><br />
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Use these steps to access information about the secure socket error code messages.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="aconcepts.htm" title="Advanced socket concepts go beyond a general discussion of what sockets are and how they work. They provide ways to design socket applications for larger and more complex networks.">Advanced socket concepts</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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