64 lines
3.3 KiB
HTML
64 lines
3.3 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="reference" />
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<meta name="DC.Title" content="Example: Intrusion detection scan policy" />
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<meta name="abstract" content="This example is of a scan policy that uses stand-alone conditions and actions." />
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<meta name="description" content="This example is of a scan policy that uses stand-alone conditions and actions." />
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<meta name="DC.Relation" scheme="URI" content="rzaubconfig.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="rzaubexampleidscan" />
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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>Example: Intrusion detection scan policy</title>
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</head>
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<body id="rzaubexampleidscan"><a name="rzaubexampleidscan"><!-- --></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">Example: Intrusion detection scan policy</h1>
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<div><p>This example is of a scan policy that uses stand-alone conditions
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and actions.</p>
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<div class="section"><p>The TCP/IP stack detects port scans on a port-by-port
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basis. The stack itself cannot detect a global scan. When a port scan is suspected,
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it generates a SCAN_EVENT that calls the intrusion detection system. The intrusion
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detection system processes the scan event and calls the SCAN_GLOBAL code to
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generate statistics and monitor thresholds.</p>
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<p>This IDS policy targets
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TCP ports 1 through 5000 for suspicious events. </p>
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</div>
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<div class="section"><pre> ibm-idsConditionAuxClass idscond10 # IDS condition
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{
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ibm-idsConditionType SCAN_EVENT
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ibm-policyIdsActionName idsscan1
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ibm-idsProtocolRange 6
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ibm-idsLocalPortRange 1-5000
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}
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ibm-idsActionAuxClass idsscan1 # IDS action
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{
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ibm-idsActionType SCAN_GLOBAL
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ibm-idsFSInterval 10
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ibm-idsFSThreshold 10 # fast scanning threshold
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ibm-idsSSInterval 100
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ibm-idsSSThreshold 20 # slow scanning threshold
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}</pre>
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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="rzaubconfig.htm" title="Learn the steps for changing your intrusion detection policy file.">Change the intrusion detection policy file</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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