127 lines
6.3 KiB
HTML
127 lines
6.3 KiB
HTML
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<meta name="DC.Title" content="Set password rules" />
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<meta name="abstract" content="Follow these steps to secure your system signon." />
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<title>Set password rules</title>
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<body id="passwdrule"><a name="passwdrule"><!-- --></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">Set password rules</h1>
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<div><p>Follow these steps to secure your system signon.</p>
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<div class="p">You need to do this first.</div>
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<div class="section"><ul><li>Set a policy that states that passwords must not be trivial and must not
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be shared.</li>
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<li>Set system values to help you with enforcement. Table 1 shows recommended
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system value settings.</li>
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</ul>
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<p>The combination of values in table is fairly restrictive
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and is intended to significantly reduce the likelihood of trivial passwords.
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However, your users may find it difficult and frustrating to select a password
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that meets these restrictions.</p>
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<div class="p">Consider providing users with the following:<ol><li>A list of the criteria for passwords.</li>
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<li>Examples of passwords that are and are not valid.</li>
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<li>Suggestions for how to think of a good password.</li>
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</ol>
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Use the Print System Security Attributes (PRTSYSSECA) command to print
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your current settings for these system values.</div>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption>Table 1. System values
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for passwords</caption><thead align="left"><tr valign="bottom"><th valign="bottom" id="d0e41">System value name</th>
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<th valign="bottom" id="d0e43">Description</th>
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<th valign="bottom" id="d0e45">Recommended value</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e41 ">QPWDEXPITV</td>
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<td valign="top" headers="d0e43 ">How often the system users must change their passwords.
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You can specify a different value for individual users in the user profile.</td>
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<td valign="top" headers="d0e45 ">60 (days)</td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDLMTAJC</td>
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<td valign="top" headers="d0e43 ">Whether the system prevents adjacent characters that
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are the same.</td>
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<td valign="top" headers="d0e45 ">1 (yes)</td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDLMTCHR</td>
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<td valign="top" headers="d0e43 ">What characters may not be used in passwords.</td>
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<td valign="top" headers="d0e45 ">AEIOU#$@</td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDLMTREP</td>
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<td valign="top" headers="d0e43 ">Whether the system prevents the same character from
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appearing more than once in the password.</td>
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<td valign="top" headers="d0e45 ">2 (not allowed consecutively)</td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDLVL</td>
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<td valign="top" headers="d0e43 ">Whether user profile passwords are limited to 10 characters
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or a maximum of 128.</td>
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<td valign="top" headers="d0e45 ">0<sup>2</sup></td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDMAXLEN</td>
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<td valign="top" headers="d0e43 ">The maximum number of characters in a password.</td>
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<td valign="top" headers="d0e45 ">8</td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDMINLEN</td>
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<td valign="top" headers="d0e43 ">The minimum number of characters in a password.</td>
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<td valign="top" headers="d0e45 ">6</td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDPOSDIF</td>
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<td valign="top" headers="d0e43 ">Whether each character in a password must be different
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from the character in the same position on the previous password.</td>
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<td valign="top" headers="d0e45 ">1 (yes)</td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDRQDDGT</td>
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<td valign="top" headers="d0e43 ">Whether the password must have at least one numeric
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character.</td>
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<td valign="top" headers="d0e45 ">1 (yes)</td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDRQDDIF</td>
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<td valign="top" headers="d0e43 ">How long a user must wait before using the same password
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again.</td>
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<td valign="top" headers="d0e45 ">5 or less (expiration intervals)<sup>1</sup></td>
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</tr>
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<tr><td valign="top" headers="d0e41 ">QPWDVLDPGM</td>
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<td valign="top" headers="d0e43 ">What exit program is called to validate a newly assigned
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password.</td>
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<td valign="top" headers="d0e45 ">*NONE</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e41 d0e43 d0e45 "><div class="note"><span class="notetitle">Note:</span> <ol><li>The QPWDEXPITV system value specifies how often you must change your password,
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such as every 60 days. This is the expiration interval. The QPWDRQDDIF system
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value specifies the number of time a user must change their password before
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then can use their original password again.</li>
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<li>QPWDLMTCHR is not enforced at password levels 2 or 3.</li>
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</ol>
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</div>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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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="rzamvpwdsysval.htm" title="In addition to setting signon system values, you also need to decide rules regarding users passwords">Password system values</a></div>
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</div>
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