130 lines
7.4 KiB
HTML
130 lines
7.4 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 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="Limit device sessions" />
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<meta name="abstract" content="The limit device sessions system value specifies whether a user is allowed to be signed on to more than one device at a time." />
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<meta name="description" content="The limit device sessions system value specifies whether a user is allowed to be signed on to more than one device at a time." />
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<meta name="DC.Relation" scheme="URI" content="rzamvplansyslvlsec.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="qlimtdevssn" />
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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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<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>Limit device sessions</title>
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</head>
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<body id="qlimtdevssn"><a name="qlimtdevssn"><!-- --></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">Limit device sessions</h1>
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<div><p>The limit device sessions system value specifies whether a user
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is allowed to be signed on to more than one device at a time.</p>
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<p>This value does not restrict the System Request menu or a second signon
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from the same device. If a user has a disconnected job, the user is allowed
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to sign on to the system with a new device session. Allowing users to sign
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on to only one workstation at a time promotes good security habits. If you
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limit users to one device, you discourage users from sharing user IDs and
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passwords. If people share user IDs, you lose both control and accountability.
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You can no longer tell who really does what functions on the system. In addition
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users must remember to sign off one workstation before moving to another one.
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Workstations left signed on, but not in use, pose a security risk. Give every
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system user a unique user ID and password with the appropriate authorities,
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then restrict them to using one workstation at a time. You can also restrict
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users to a specific device through individual<a href="rzamvuserprof.htm"> user profiles</a>.</p>
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<p>See <a href="#qlimtdevssn__quickref">Table 2</a> table for an
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overview of the limit device sessions system value.</p>
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<div class="p">
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption>Table 1. Possible values for the limit device sessions
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system value</caption><thead align="left"><tr valign="bottom"><th valign="bottom" id="d0e32">iSeries™ Navigator</th>
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<th valign="bottom" id="d0e36">Character-based interface</th>
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<th valign="bottom" id="d0e38">Description</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e32 ">Deselected</td>
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<td valign="top" headers="d0e36 ">0 (No)</td>
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<td valign="top" headers="d0e38 ">The system allows an unlimited number of signon sessions.</td>
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</tr>
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<tr><td valign="top" headers="d0e32 ">Selected</td>
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<td valign="top" headers="d0e36 ">1 (Yes)</td>
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<td valign="top" headers="d0e38 ">Users are limited to one device session.</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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<p><span class="uicontrol">Relationship to security policy</span></p>
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<p>Setting the limit device sessions system value discourages sharing password
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and leaving workstation signed on; however, regardless of the decision you
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make for this system value, your security policy should implicitly discourage
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these practices. These bad habits provide a potential attacker access to your
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resources and sensitive business information. In your security policy users
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should be made aware of the risks and the consequences for these practices. </p>
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<div class="p">
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<div class="tablenoborder"><a name="qlimtdevssn__quickref"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="qlimtdevssn__quickref" frame="border" border="1" rules="all"><caption>Table 2. Quick Reference. Provides details
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for the limit device sessions system value.</caption><thead align="left"><tr valign="bottom"><th valign="bottom" id="d0e73">iSeries Navigator name</th>
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<th valign="bottom" id="d0e77">Limit each user to one device session</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e73 ">Character-based interface name</td>
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<td valign="top" headers="d0e77 ">QLMTDEVSSN</td>
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</tr>
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<tr><td valign="top" headers="d0e73 ">Authority</td>
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<td valign="top" headers="d0e77 "><p>All object access (*ALLOBJ)<br />
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Security administrator (*SECADM)</p>
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<div class="note"><span class="notetitle">Note:</span> The Security Officer (QSECOFR)
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user profile is shipped with these authorities.</div>
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</td>
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</tr>
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<tr><td valign="top" headers="d0e73 ">How to access</td>
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<td valign="top" headers="d0e77 "><div class="p"><strong>iSeries Navigator</strong><ol><li>Expand <span class="menucascade"><span class="uicontrol">Security</span> > <span class="uicontrol">Policies</span></span>.</li>
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<li>Right click <span class="uicontrol">Signon Policy</span> and select <span class="uicontrol">Properties</span>.</li>
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<li>On the <span class="uicontrol">General</span> page, you will find the option for
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limiting device sessions.</li>
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</ol>
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</div>
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<div class="p"><span class="uicontrol">Character-based interface</span><ol><li>In the character-based interface, type <samp class="codeph">WRKSYSVAL QLMTDEVSSN</samp>.</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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<tr><td valign="top" headers="d0e73 ">Changes take effect</td>
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<td valign="top" headers="d0e77 ">Immediately</td>
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</tr>
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<tr><td valign="top" headers="d0e73 ">Default value</td>
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<td valign="top" headers="d0e77 ">Deselected</td>
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</tr>
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<tr><td valign="top" headers="d0e73 ">Recommended value</td>
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<td valign="top" headers="d0e77 ">Selected</td>
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</tr>
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<tr><td valign="top" headers="d0e73 "><a href="rzamvlockdown.htm">Lockable</a></td>
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<td valign="top" headers="d0e77 ">Yes</td>
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</tr>
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<tr><td valign="top" headers="d0e73 ">Special considerations </td>
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<td valign="top" headers="d0e77 ">NA</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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<p>For more detailed information about this security value, see Chapter 3, <span class="q">"Security
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System Values"</span> in <a href="../books/sc415302.pdf" target="_blank">Security
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Reference</a>. </p>
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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="rzamvplansyslvlsec.htm" title="System security entails controlling user access and their privileges, maintaining information integrity, monitoring processes and access, auditing system functions, and providing backup and recovery of security related information.">Plan system security</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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