• "Job Aids"
  
  • ASCII and Extended ASCII Table
  • The BASE64 and BASE32 Alphabets
  • File Signature Table
  • "Bad" TCP/UDP Ports
  • Boolean logic: AND, OR, and XOR logic table in hex
  TCP/IP Pocket Reference Guide
  
  
• Security (Also see GCK's Information Security-related URLs)
• An Overview of Cryptography (Handbook on Local Area Networks, Auerbach, 1998 and continuously updated...)
• Cable Modems and the Internet: Securing the SOHO (Information Security Magazine, July 2000)
• "Protecting Home Computers and Networks" (February 2002)
• Port Scanning: It's Not Just an Offensive Tool Anymore (Information Security Magazine, June 2001)
• Considerations for LAN and Internet Security (Handbook on Local Area Networks, Auerbach, 1997; GCK & Carol Monaghan)
• Defenses Against Distributed Denial of Service Attacks (November 2000)
• Firewall Routers and Packet Filtering (Network VAR, June 1995)
• Musings About Network Security (VTAC Newsletter, in press)
• Passwords — Strengths and Weaknesses (Internet and Internetworking Security, Auerbach, 1997)
• Roaming PKI (Information Security Magazine, February 2000)
• "Securing VPNs" (14th Annual Symposium on Information Transfer, Texas A&M University, March 1999)
• Modeling Trust With PGP 6.5.1 (Information Security, August 1999)
• Securing Your Web Site (Information Security, April 2000)
• Will Loveletter Ultimately Do Any Good? (Security Perspectives Column, Security Wire Digest, Vol. 2, No. 18, 5/15/2000)
• Why Security Policies are so Hard to Implement (IEEE ITPro Magazine, March/April 2001)
• Security at the Speed of Thought (Information Security Magazine, November 2000)
• Norton Internet Security Provides a Total Solution for the Home (Information Security Magazine, April 2001)
• Top Layer AppSwitch: Intrusion Detection in Depth (Information Security Magazine, August 2001)
• SecurityExpressions (Information Security Magazine, February 2002)
• Musings About Computer and Network Security (Champlain Business Journal, November 2002)
Diversity — A Best Practice for Security (Ashton, Metzler & Associates and Webtorials.com IT Business Brief, March 2003)

See also Webtorials presentations below.


• Cyberforensics (Also see GCK's Cybercrime and Cyberforensics-related URLs)
• On Teaching TCP/IP Protocol Analysis to Computer Forensics Examiners. (Journal of Journal Forensic Practice, March 2008).
• Pedagogy and Overview of a Graduate Program in Digital Investigation Management. (Proceedings of the 41st Hawaii International Conference on System Sciences (HICSS-41), January 2008; GCK & D. Haggerty)
• Anti-Forensics and the Digital Investigator. (Proceedings of the 5th Australian Digital Forensics Conference, December 2007)
• Experiences and Methodologies Teaching Hands-On Cyberforensics Skills Online. (Proceedings of CFET 2007: 1st International Conference on Cybercrime Forensics Education & Training, September 2007)
• The Case for Teaching Network Protocols to Computer Forensics Examiners. (Proceedings of the Conference on Digital Forensics, Security and Law, April 2007; GCK & M. Fasulo)
• Online Education in Computer and Digital Forensics: A Case Study (Proceedings of the 40th Hawaii International Conference on System Sciences (HICSS-40), January 2007)
• The Design of an Undergraduate Degree Program in Computer & Digital Forensics (Journal of Digital Forensics, Security and Law, 2006; GCK & M.E Schirling)
• The Role of Computer Forensics in Law Enforcement (OFFICER.com, January 2005)
• An Overview of Steganography for the Computer Forensics Examiner (FBI Forensic Science Communications, 6(3), July 2004)
• Steganography: Implications for the Prosecutor and Computer Forensics Examiner (American Prosecutors Research Institute Child Sexual Exploitation Program UPDATE, Summer 2004)
• Book Review: Guide to Computer Forensics and Investigations (FBI Forensic Science Communications, Jan. 2004)
• Computer Forensics: The Issues and Current Books in the Field (Information Security Magazine, April 2002; GCK & M. Schirling)
• Steganography: Hiding Data in Data (Windows & .NET Magazine, April 2002)
• Прячем данные в данных (Russian translation)
• Sam Spade: A Multifunction Information Toolkit (Information Security Magazine, September 2001)


• Book Review: Challenges to Digital Forensic Evidence. (Journal of Digital Forensics, Security and Law, 2008).
• Book Review: Conquest in Cyberspace: National Security and Information Warfare. (Journal of Digital Forensics, Security and Law, 2007).
• "Book Review: Digital Evidence and Computer Crime: Forensic Science, Computers and the Internet, 2nd ed. (Criminal Justice Review, September, 2007)
• Book Review: No Place To Hide (Journal of Digital Forensics, Security and Law, 2007)
• Book Review: Digital Crime and Forensic Science in Cyberspace (Journal of Digital Forensics, Security and Law, 2006)
• Book Review: Computer Evidence: Collection & Preservation (Journal of Digital Forensic Practice, March 2006; N. Beebe, GCK, & M. Rogers)



• The Internet and TCP/IP
  • An Overview of TCP/IP Protocols and the Internet (Originally posted at the InterNIC, August 1994 and continuously updated...)
  • Building a World Wide Web Site (LAN Magazine, December 1996)
  • Case Study: Bonding With the Internet (LAN Magazine, December 1994; GCK & Carol Monaghan)
  • IETF — History, Background, and Role in Today's Internet
  • IPv6: The Next Generation Internet Protocol (Handbook on Local Area Networks, Auerbach, 1997)
  • Mobile IP: Harbinger of Untethered Computing (Telephony, September 21, 1998)
  • A Primer on Internet and TCP/IP Tools and Utilities (FYI 30/RFC 2151) (GCK & Steve Shepard) [ASCII text | HTML | PDF | Postscript | Word]
  • Setting Up Your Own Domain Name System (DNS) (Network VAR, July 1996)
  • Some Guidelines For Setting Up Internet Information Servers (LAN Magazine, September 1996)
  
  
• Electronic Commerce
  Minting Cybermoney: Jobs, Electronic Commerce, and Opportunity for Vermont, published in conjunction with the Vermont Business Roundtable (Steve Shepard & GCK)
  • Certificates, Digital Signatures, and Cryptography — and Their Relationship to Electronic Commerce (An addendum to Minting Cybermoney)
  • Internet Payment Systems: Status and Update on SSL/TLS, SET, and IOTP (Information Security Magazine, October 2000; GCK & Todd Pritsky)
  • "Evolution of Electronic Commerce" URLs (GCK & Steve Shepard)
  • Time to Spend Electronic Money (Network VAR, August, 1997; GCK & Steve Shepard)
  • Securing Your Website for Internet Commerce (Senator Leahy's "Doing Business on the Internet," March 1999)
  • Electronic Payment Options (Steve Shepard & GCK)
  
  
• Windows NT/2000
  • Binary Numbers and Subnet Masks (Windows 2000 Magazine, January 2001)
  • Cryptography and Windows NT (Windows NT Magazine, December 1999)
  • How DNS Works: What It Means to the Customer Getting Connected (Windows 2000 Magazine, June 2000)
  • The Dynamic Host Configuration Protocol (DHCP) and Windows NT (Windows NT Magazine, May 1999; GCK & Carol Monaghan)
  • Packet Filtering and Microsoft Routing and Remote Access Service (Windows NT Magazine, January 2000; GCK, Rik Dayvie, & Craig Martin)
  • Routing, RIP, and Windows NT (Windows NT Magazine, August 23, 1999 Web exclusive; GCK & Carol Monaghan)
  • Security in Windows NT (Network VAR, February 1998)
  • Security Tools for Windows NT (Windows NT Magazine, October 1999)
  
  
• Legislation and Public Policy
  • Cryptography, Digital Signatures, E-Commerce, and the Obfuscation of Language (Information Security Magazine, September 1999)
  • The Need for Computer Crime Legislation in Vermont
  
  
• Network Technologies
  • ADSL (LAN Magazine and Network VAR quarterly supplements, June 1997; Walter Goralski & GCK)
  • ATM Overview (Stacks, May 1995 )
  • "ATM Versus Internet ISA" (Comdex Fall '97)
  • Fibre Channel (Interoperability Report, supplement to Network VAR, April 1996, and LAN Magazine, May 1996; Walter Goralski & GCK)
  • 56-kbps Modems (LAN Magazine and Network VAR quarterly supplements, June 1997; GCK & Walter Goralski)
  • FRAME RELAY: CIR and Billing Issues Revealed (Network VAR, December 1995)
  • The IEEE 802.9 Integrated Services Local Area Network Standard (LAN Magazine, May 1994)
  • ISDN: Concepts, Facilities, and Services, 4th. ed. (GCK & Peter Southwick)
  • Universal Fax and E-mail (Network VAR, November 1997; Carol Monaghan & GCK)
  
  
• Miscellaneous Articles/Papers
  • Credit Unions and the Internet in the 21st Century, a talk for the Constitution State Credit Union
  • The Portrayal of the Network in the Popular Media (IEEE Communications Magazine, May 1997; GCK & Steve Shepard)
  • Why the Web Can Be Suitable for Learning (IEEE Computer Magazine, February 1999; GCK, Ken Rosenblad, & Steve Shepard)
  
  

  On-line Presentations at Webtorials.com The Nimda Worm, a Webtorials webcast, September 2001. An Update on Code Red, a Webtorials webcast, August 2001. Securing a Small Office/Home Office LAN, a Webtorials webcast, March 2001. Special Report: "Love Letter" and Related E-mail Viruses, a Webtorials webcast, 5 May 2000. Denial of Services (DoS) Attacks, a Webtorials webcast, 10 February 2000. The Internet, Intranet, Extranets -- and VPNs, a talk given at the ICA Network Technology Institute, Boulder, CO, August, 1999. Network Security Overview, a talk given at the ICA Network Technology Institute, Boulder, CO, August, 1999.

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