|  Chirillo, John. Hack Attacks Denied: A Complete Guide to Network Lockdown for UNIX, Windows, and Linux, Second Edition . John Wiley & Sons. Indianapolis, IN, 2002. ISBN 0471232831. Refer to Chapter 1, "Common Ports and Services," and Chapter 4, "Safeguarding Against Penetration Attacks." Chirillo, John. Hack Attacks Revealed: A Complete Reference for UNIX, Windows, and Linux with Custom Security Toolkit, Second Edition . John Wiley & Sons. Indianapolis, IN, 2002. ISBN 0471232823. Refer to Chapter 4, "Well-Known Ports and Their Services," and Chapter 5, "Discovery and Scanning Techniques." McClure, Stuart, Joel Scambray, and George Kurtz. Hacking Exposed: Network Security Secrets and Solutions, Third Edition . McGraw-Hill. New York, NY, 2001. ISBN 0072193816. Refer to Chapter 12, "Denial of Service Attacks."  Virus Bulletin Web site: http://www.virusbtn.com The Twenty Most Critical Internet Security Vulnerabilities list (SANS): http://www.sans.org/top20/ The CERT Coordination Center (CERT/CC): http://www.cert.org |
