78 lines
5.1 KiB
HTML
78 lines
5.1 KiB
HTML
<?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 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="Plan password level changes" />
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<meta name="abstract" content="Operations with other systems may fail or users may not be able to sign on to the system if you haven’t planned for the password level change adequately." />
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<meta name="description" content="Operations with other systems may fail or users may not be able to sign on to the system if you haven’t planned for the password level change adequately." />
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<meta name="DC.Relation" scheme="URI" content="rzamvpwdlvl.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzamvqpwdlvlone.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzamvqpwdlvltwo.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzamvqpwdlvlthree.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="passwdlvlchg" />
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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>Plan password level changes</title>
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</head>
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<body id="passwdlvlchg"><a name="passwdlvlchg"><!-- --></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">Plan password level changes</h1>
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<div><p>Operations with other systems may fail or users may not be able
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to sign on to the system if you haven’t planned for the password level change
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adequately.</p>
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<p>Changing password levels should be planned carefully. Prior to changing
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the QPWDLVL system value, make sure you have saved your security data using
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the SAVSECDTA or SAVSYS command. If you have a current backup, you will be
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able to reset the passwords for all users’ profiles if you need to return
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to a lower password level.</p>
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<p>Products that you use on the system and on clients with which the system
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interfaces, may have problems when the password level (QPWDLVL) system value
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is set to 2 or 3. Any product or client that sends passwords to the system
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in an encrypted form, rather than in the clear text a user enters on a signon
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screen, must be upgraded to work with the new password encryption rules for
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QPWDLVL 2 or 3. Sending the encrypted password is known as password substitution.</p>
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<p>Password substitution is used to prevent a password from being captured
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during transmission over a network. Password substitutions generated by older
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clients that do not support the new algorithm for QPWDLVL 2 or 3, even if
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the specific characters are correct, will not be accepted. This also applies
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to any iSeries™ to iSeries peer
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access which utilizes the encrypted values to authenticate from one system
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to another.</p>
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<p>The problem is compounded by the fact that some affected products, such
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as Java™ Toolbox,
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are provided as middle-ware. A third party product that incorporates a prior
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version of one of these products will not work correctly until rebuilt using
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an updated version of the middle-ware. Given this and other scenarios, it
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is easy to see why careful planning is necessary before changing the QPWDLVL
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system value.</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="rzamvqpwdlvlone.htm">Considerations for changing QPWDLVL from 0 to 1</a></strong><br />
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Keep these items in mind as you consider changing your password level.</li>
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<li class="ulchildlink"><strong><a href="rzamvqpwdlvltwo.htm">Considerations for changing QPWDLVL from 0 or 1 to 2</a></strong><br />
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Password level 2 introduces the use of case sensitive passwords up to 128 characters in length, also called passphrases, and provides the maximum ability to revert back to QPWDLVL 0 or 1.</li>
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<li class="ulchildlink"><strong><a href="rzamvqpwdlvlthree.htm">Considerations for changing QPWDLVL from 2 to 3</a></strong><br />
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Keep these items in mind as you consider changing your password level.</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="rzamvpwdlvl.htm" title="This system value allows you to set a specific password environment where all user profile passwords can have the same length specification.">Password level</a></div>
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</div>
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</div>
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</body>
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</html> |