91 lines
5.4 KiB
HTML
91 lines
5.4 KiB
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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<meta name="DC.Title" content="Common ODBC strategies that are not secure" />
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<meta name="abstract" content="Avoid some common ODBC security techniques to ensure your environment is secure." />
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<meta name="description" content="Avoid some common ODBC security techniques to ensure your environment is secure." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<title>Common ODBC strategies that are not secure</title>
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</head>
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<body id="rzaiiodbc13"><a name="rzaiiodbc13"><!-- --></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">Common ODBC strategies that are not secure</h1>
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<div><p>Avoid some common ODBC security techniques to ensure your environment
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is secure.</p>
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<p>Sometimes system administrators attempt to secure access to the data, rather
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than securing the data itself. This is extremely risky, as it requires that
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administrators understand ALL of the methods by which users can access data.
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Some common ODBC security techniques to avoid are:</p>
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<div class="section"><h4 class="sectiontitle">Command line security</h4><p>This may be useful for a character-based
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interface or for 5250 emulation-based applications. However, this method assumes
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that if you prevent users from entering commands in a 5250 emulation session,
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they can access data only through the programs and menus that the system administrator
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provides to them. Therefore, command line security is never truly secure.
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The use of iSeries™ Access
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policies and Application Administration improve security, and use of object
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level authority improves it even more.</p>
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<p>Potentially, iSeries Access
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for Windows<sup>®</sup> policies
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can restrict ODBC access to a particular data source that might be read only.
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Application Administration in iSeries Navigator can prevent ODBC access.</p>
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<p>For
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additional information, see the IBM<sup>®</sup> Security - Reference.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">User exit programs</h4><p>A user exit program allows the
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system administrator to secure an IBM-supplied host server program. The iSeries Access
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ODBC driver uses the Database host server: exit points QIBM_QZDA_INIT; QIBM_QZDA_NDBx;
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and QIBM_QZDA_SQLx. Some ODBC drivers and iSeries Access for Windows data
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access methods (such as OLE DB) may use other host servers.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Journals</h4><p>Journaling often is used with client/server
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applications to provide commitment control. The journals contain detailed
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information on every update made to a file that is being journaled. The journal
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information can be formatted and queried to return specific information, including:</p>
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<ul><li>The user profiles that updated the file</li>
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<li>The records that were updated</li>
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<li>The type of update</li>
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</ul>
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<p>Journaling also allows user-defined journal entries. When used with
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a user exit program or trigger, this offers a relatively low-overhead method
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of maintaining user-defined audits. For further information, see the Backup
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and Recovery.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Data Source Name (DSN) restrictions</h4><p>The iSeries Access
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ODBC driver supports a DSN setting to give read-only access to the database.
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The iSeries Access
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ODBC driver supports a read-only and a read-call data source setting. Although
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not secure, these settings can assist in preventing inadvertent delete and
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update operations.</p>
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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="rzaiiodbc09.htm" title="Highlights a few security considerations when working with ODBC, and provides references to more detailed security instructions.">iSeries Access for Windows ODBC security</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="../books/sc415302.pdf" target="_blank">iSeries Security - Reference</a></div>
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<div><a href="../books/sc415304.pdf" target="_blank">Backup and Recovery</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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