Unauthorized Use of Internet IM
Port blocking may not be effective to prevent connectivity to external IM services. For example, AOL IM will search for ANY open port to pass through, rendering a firewall or proxy server ineffective206.
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CertiGuide for Security+ (http://www.CertiGuide.com/secplus/) on CertiGuide.com
Version 1.0 - Version Date: November 15, 2004
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