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<h1 class="topictitle1">Limit repeating characters in passwords</h1>
<div><p>This system value limits the use of repeating characters in a password.</p>
<p>This value provides additional security by preventing users from specifying
passwords that are easy to guess, such as the same character repeated several
times. When the password level is 2 or 3, the test for repeated characters
is case sensitive. This means that a lowercase ’a’ is not the same as an uppercase
’A’.</p>
<p>See <a href="#qpwdlmtrep__quickref">Quick reference</a> table
for an overview of the <span class="uicontrol">Limit repeating characters in passwords</span> system
value.</p>
<div class="p">
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption>Table 1. Possible values for the limit repeating characters
in passwords system value</caption><thead align="left"><tr valign="bottom"><th valign="bottom" id="d0e32">iSeries™ Navigator </th>
<th valign="bottom" id="d0e36">Character-based interface</th>
<th valign="bottom" id="d0e38">Description</th>
</tr>
</thead>
<tbody><tr><td valign="top" headers="d0e32 ">Characters may be used more than once</td>
<td valign="top" headers="d0e36 ">0</td>
<td valign="top" headers="d0e38 ">The same characters can be used more than once in a
password.</td>
</tr>
<tr><td valign="top" headers="d0e32 ">Characters may not be used more than once</td>
<td valign="top" headers="d0e36 ">1</td>
<td valign="top" headers="d0e38 ">The same character cannot be used more than once in
a password.</td>
</tr>
<tr><td valign="top" headers="d0e32 ">Characters may not be used consecutively</td>
<td valign="top" headers="d0e36 ">2</td>
<td valign="top" headers="d0e38 ">The same character cannot be used consecutively in a
password.</td>
</tr>
</tbody>
</table>
</div>
</div>
<p><strong>Relationship to security policy</strong></p>
<p>Within your security policy you should describe all password rules that
are defined by the system values related passwords. For this system value,
inform users on whether or not password rules allow repeated characters. This
value provides additional security by preventing users from specifying passwords
that are easy to guess, such as the same character repeated several times.
This system value works with other system values that specify the composition
of individual passwords.</p>
<div class="p">
<div class="tablenoborder"><a name="qpwdlmtrep__quickref"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="qpwdlmtrep__quickref" frame="border" border="1" rules="all"><caption>Table 2. Quick Reference . Provides details
for the <span class="uicontrol">Limit repeating characters in passwords</span> system
value.</caption><thead align="left"><tr valign="bottom"><th valign="bottom" id="d0e83">iSeries Navigator name</th>
<th valign="bottom" id="d0e87">Restrict repeating characters</th>
</tr>
</thead>
<tbody><tr><td valign="top" headers="d0e83 ">Character-based interface name</td>
<td valign="top" headers="d0e87 ">QPWDLMTREP</td>
</tr>
<tr><td valign="top" headers="d0e83 ">Authority</td>
<td valign="top" headers="d0e87 "><p>All object access (*ALLOBJ)<br />
Security administrator (*SECADM)</p>
<div class="note"><span class="notetitle">Note:</span> The Security Officer (QSECOFR) user profile is shipped with
these authorities. </div>
</td>
</tr>
<tr><td valign="top" headers="d0e83 ">How to access</td>
<td valign="top" headers="d0e87 "><div class="p"><strong>iSeries Navigator</strong><ol><li>Expand <span class="menucascade"><span class="uicontrol">Security</span> &gt; <span class="uicontrol">Policies</span></span>.</li>
<li>Right click <strong>Password Policy</strong> and select <strong>Properties</strong>.</li>
<li>On the <strong>Validation</strong> page, you will find the option to restrict repeating
characters.</li>
</ol>
</div>
<div class="p"><strong>Character-based interface</strong><ol><li>In the character-based interface, type <samp class="codeph">WRKSYSVAL QPWDLMTREP</samp>.</li>
</ol>
</div>
</td>
</tr>
<tr><td valign="top" headers="d0e83 ">Changes take effect</td>
<td valign="top" headers="d0e87 ">Immediately</td>
</tr>
<tr><td valign="top" headers="d0e83 ">Default value</td>
<td valign="top" headers="d0e87 ">Characters may be used more than once</td>
</tr>
<tr><td valign="top" headers="d0e83 ">Recommended value</td>
<td valign="top" headers="d0e87 ">Characters cannot be repeated consecutively</td>
</tr>
<tr><td valign="top" headers="d0e83 "><a href="rzamvlockdown.htm">Lockable</a></td>
<td valign="top" headers="d0e87 ">Yes</td>
</tr>
<tr><td valign="top" headers="d0e83 ">Special considerations </td>
<td valign="top" headers="d0e87 ">When the password level system value has a value of
2 or 3, the test for repeated characters is case sensitive. This means that
a lowercase ’a’ is not the same as an uppercase ’A’.</td>
</tr>
</tbody>
</table>
</div>
</div>
<p>For more in-depth information about this security value, see Chapter 3,
"Security System Values" in <a href="../books/sc415302.pdf" target="_blank">Security Reference</a>. </p>
</div>
<div>
<div class="familylinks">
<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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