64 lines
4.0 KiB
HTML
64 lines
4.0 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 name="Robots" content="index,follow" />
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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="Check for altered objects" />
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<meta name="abstract" content="This article describes how to use the Check Object Integrity (CHKOBJITG) command to look for objects that have been altered." />
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<meta name="description" content="This article describes how to use the Check Object Integrity (CHKOBJITG) command to look for objects that have been altered." />
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<meta name="DC.Relation" scheme="URI" content="rzamvdevelopintrusiondetectstrat.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="checkalteredobj" />
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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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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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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>Check for altered objects</title>
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</head>
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<body id="checkalteredobj"><a name="checkalteredobj"><!-- --></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">Check for altered objects</h1>
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<div><p>This article describes how to use the Check Object Integrity (CHKOBJITG)
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command to look for objects that have been altered.</p>
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<div class="p">An altered object is usually an indication that someone is attempting to
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tamper with your system. You might want to run this command after someone
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has: <ul><li>Restored programs to your system</li>
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<li>Used dedicated service tools (DST)</li>
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</ul>
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</div>
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<p>When you run the command, the system creates a database file containing
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information about any potential integrity problems. You can check objects
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owned by one or more profiles, objects that match a path name, or all objects
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on the system. You can look for objects whose domain has been altered and
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objects that have been tampered with. You can recalculate program validation
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values to look for objects of type *PGM, *SRVPGM, *MODULE, and *SQLPKG that
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have been altered. You can check the signature of objects that can be digitally
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signed. You can check if libraries and commands have been tampered with. You
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can also start a integrated file system scan or check if objects failed a
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previous file system scan.</p>
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<p>You can also recalculate program validation values to look for objects
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of type *PGM, *SRVPGM, *MODULE, and *SQLPKG that have been altered. Running
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the CHKOBJITG program requires *AUDIT special authority. The command might
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take a long time to run because of the scans and calculations it performs.
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You should run it at a time when your system is not busy.</p>
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<div class="important"><span class="importanttitle">Important:</span> To prevent impacts to either performance
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or system operations, distribute ownership of objects to multiple profiles.
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Do not assign all (or nearly all) objects to only one owner profile.</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="rzamvdevelopintrusiondetectstrat.htm" title="The following information is a collection of tips to help you detect potential security exposures.">Prevent and detect security exposures</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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