212 lines
12 KiB
HTML
212 lines
12 KiB
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<meta name="DC.Title" content="Secure system access levels" />
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<meta name="abstract" content="To help you implement the required level of security for your company, you may wish to restrict system access by using the password system values. A company can control the level of security by setting the password system values requiredly." />
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<title>Secure system access levels</title>
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</head>
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<body id="rzakzsecureaccess"><a name="rzakzsecureaccess"><!-- --></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 system access levels</h1>
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<div><p>To help you implement the required level of security for your company,
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you may wish to restrict system access by using the password system values.
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A company can control the level of security by setting the password system
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values requiredly.</p>
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<p>For example, if your company has recently added an iSeries™ that runs highly confidential
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financial applications, you should probably reassess your company's system
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security policy. In general, your company follows a moderately strict security
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policy. So, rather than completely rewriting the policy, you decide to restrict
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signon access to the new Finance system by tightening the password rules.</p>
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<p>To secure entry into the Finance system, you must do the following:</p>
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<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 enforce the new policy. (See <a href="#rzakzsecureaccess__sysvalueset">Table 1</a>.)</li>
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</ul>
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<p>In addition, you may also want to provide users with this information:</p>
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<ul><li>A list of the criteria for passwords.</li>
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<li>Examples of passwords that are and are not valid. (See <a href="#rzakzsecureaccess__expassword">Table 2</a>.)</li>
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<li>Suggestions for how to think of a good password.</li>
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</ul>
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<p>The following table lists the recommended password system value settings
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to implement your new password requirements (These values can be changed depending
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on how strict you want to control signon access.):</p>
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<div class="tablenoborder"><a name="rzakzsecureaccess__sysvalueset"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rzakzsecureaccess__sysvalueset" frame="void" border="0" rules="none"><caption>Table 1. System value
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settings</caption><thead align="left"><tr><th valign="top" id="d0e59">Name in iSeries Navigator</th>
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<th valign="top" id="d0e64">Recommended value</th>
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<th valign="top" id="d0e66">Name in character-based interface</th>
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</tr>
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</thead>
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<tbody><tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdexpitv.htm">Password expiration</a></td>
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<td valign="top" headers="d0e64 ">60 days</td>
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<td valign="top" headers="d0e66 ">QPWDEXPITV</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdlmtajc.htm">Restrict consecutive digits</a></td>
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<td valign="top" headers="d0e64 ">Yes</td>
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<td valign="top" headers="d0e66 ">QPWDLMTAJC</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdlvl.htm">Password level</a></td>
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<td valign="top" headers="d0e64 ">3 (See note <a href="#rzakzsecureaccess__password">1</a>.)</td>
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<td valign="top" headers="d0e66 ">QPWDLVL</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdmaxlen.htm">Maximum password length</a></td>
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<td valign="top" headers="d0e64 ">8 characters</td>
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<td valign="top" headers="d0e66 ">QPWDMAXLEN</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdminlen.htm">Minimum password length</a></td>
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<td valign="top" headers="d0e64 ">6 characters</td>
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<td valign="top" headers="d0e66 ">QPWDMINLEN</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdposdif.htm">Require a new character in each position</a></td>
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<td valign="top" headers="d0e64 ">Yes</td>
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<td valign="top" headers="d0e66 ">QPWDPOSDIF</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdrqddgt.htm">Require at least one digit</a></td>
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<td valign="top" headers="d0e64 ">Yes</td>
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<td valign="top" headers="d0e66 ">QPWDRQDDGT</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdrqddif.htm">Password reuse cycle</a></td>
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<td valign="top" headers="d0e64 ">10 passwords</td>
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<td valign="top" headers="d0e66 ">QPWDRQDDIF</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdvldpgm.htm">Password validation program</a></td>
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<td valign="top" headers="d0e64 ">None (See note <a href="#rzakzsecureaccess__sysvalue">2</a>.)</td>
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<td valign="top" headers="d0e66 ">QPWDVLDPGM</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdlmtrep.htm">Restrict repeating characters</a></td>
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<td valign="top" headers="d0e64 ">Characters may not be used consecutively</td>
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<td valign="top" headers="d0e66 ">QPWDLMTREP</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </td>
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</tr>
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<tr><td valign="top" headers="d0e59 "><a href="rzakzqpwdlmtchr.htm">Restricted characters</a></td>
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<td valign="top" headers="d0e64 ">A,E,I,O,U,@,#, and $</td>
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<td valign="top" headers="d0e66 ">QPWDLMTCHR</td>
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</tr>
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<tr><td colspan="3" valign="top" headers="d0e59 d0e64 d0e66 "> </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 class="note"><span class="notetitle">Notes:</span> <ol><li id="rzakzsecureaccess__password"><a name="rzakzsecureaccess__password"><!-- --></a>You may not be able to use password level 3 (Long passwords
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using an unlimited character set. Disable iSeries NetServer™ on Windows<sup>®</sup> 95/98/ME
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clients.) if you need to connect to or from an iSeries server at V5R1 or earlier or
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a server that does not support long passwords.</li>
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<li id="rzakzsecureaccess__sysvalue"><a name="rzakzsecureaccess__sysvalue"><!-- --></a>To change this system value, you must use the character-based
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interface. It is not in iSeries Navigator. Open a character-based interface
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and type <pre>CHGSYSVAL VALUE(QPWDVLDPGM) VALUE('*NONE')</pre>
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</li>
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</ol>
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</div>
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<p>The following table provides examples of good and bad passwords:</p>
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<div class="tablenoborder"><a name="rzakzsecureaccess__expassword"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rzakzsecureaccess__expassword" frame="border" border="1" rules="all"><caption>Table 2. Example passwords</caption><thead align="left"><tr><th valign="top" id="d0e231">Password</th>
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<th valign="top" id="d0e233">Details</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e231 ">JohnDoe</td>
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<td valign="top" headers="d0e233 ">Bad. Do not use a name. Also, no digits are used.</td>
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</tr>
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<tr><td valign="top" headers="d0e231 ">112000</td>
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<td valign="top" headers="d0e233 ">Bad. Do not use a date that can be identified with you.</td>
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</tr>
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<tr><td valign="top" headers="d0e231 ">aaaxyz</td>
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<td valign="top" headers="d0e233 ">Bad. Uses more than 2 consecutive characters and uses a character that
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is not allowed (a). Also, no digit is used.</td>
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</tr>
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<tr><td valign="top" headers="d0e231 ">cm2s0j</td>
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<td valign="top" headers="d0e233 ">Good. Meets all the criteria for a good password.</td>
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</tr>
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<tr><td valign="top" headers="d0e231 ">c0mptr</td>
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<td valign="top" headers="d0e233 ">Good. Meets all the criteria for a good password.</td>
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</tr>
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<tr><td valign="top" headers="d0e231 ">Mfc1RB</td>
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<td valign="top" headers="d0e233 ">Good. Meets all the criteria for a good password. The stategy for this
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password uses the first letter of each word in a sentence, 'My favorite color
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is Royal Blue.' It also replaces the vowel with a number and uses a combination
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of upper and lower case characters.</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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<p>By completing these steps, you have tightened signon access to the finance
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system by changing the password system values. You can alter the values for
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each of the password system values to meet the security level for your company.
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This example has provided one way that the password system values can work
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together to produce a moderately strict environment.</p>
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<p>To learn more about these and other system values you can view and change
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in iSeries Navigator,
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see the following:</p>
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<dl><dt class="dlterm">Password overview</dt>
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<dd>Describes all password system values. In addition, you will find links
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to specific password articles that describe the different settings for each
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system value.</dd>
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<dt class="dlterm">i5/OS™ system
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value finder</dt>
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<dd> Use this tool to find system values in iSeries Navigator. The i5/OS system
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value finder can be particularly helpful if you are trying to make the switch
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from the system value terms that were used in the character-based interface
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to the terms that are now used in iSeries Navigator.</dd>
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<dt class="dlterm">System values categories</dt>
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<dd>Find an introduction to all the categories of system values found in iSeries Navigator.</dd>
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</dl>
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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="rzakzmanage.htm" title="As an administrator, you can perform many tasks to help you manage system values. Select this topic to learn how to save, configure, and lock system values.">Manage system values</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzakzoverviewparent.htm" title="iSeries Navigator groups system values into categories to streamline system value management.">System value categories</a></div>
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<div><a href="rzakzpasswordoverview.htm" title="Use i5/OS password system values to control the password values and password restrictions.">System values: Password overview</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="rzakzfinder.htm">System value finder</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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