Subscribe to Windows IT Pro

Gary C. Kessler

Gary C. Kessler is a consultant and the program coordinator of the networking major at Champlain College in Burlington, Vermont.
Email: kumquat@sover.net

My Latest Content
My Latest Comments



Author Articles

Hiding Data in Data

By Gary C. Kessler, 03/25/2002

Does your encrypted data stick out like a sore thumb? Try these techniques for hiding it.

Other Forms of Steganography

By Gary C. Kessler, 03/25/2002

Steganography doesn’t need to be high tech or in written form. Here are some examples of different types of steganographic methods.

DNS Resources

By Gary C. Kessler, 05/08/2000

Gary Kessler provides a list of third-party products that let you provide a DNS service on an NT server.

Subnetting and Variable-Length Subnet Masks

By Gary C. Kessler, 05/08/2000

Understand VLSMs and get a handle on your organization's IP address setup.

How DNS Works

By Gary C. Kessler, 05/01/2000

Is your organization preparing to connect to the Internet? Use these DNS references and tools to help get the job done right.

The Power of Packet Filtering

By Craig T. Martin, 12/06/1999

Follow these guidelines for securing your server.

Deciphering Cryptography

By Gary C. Kessler, 11/12/1999

Decrypt the basics of cryptography, discover the different cryptographic algorithms, and decode how NT uses cryptography.

Add Fuel to Your Firewall

By Gary C. Kessler, 09/14/1999

Discover several security tools that help you spot potential problems before attackers exploit them.

IP Addressing Basics

By Gary C. Kessler, 09/01/1999

Learn everything there is to know about IP addresses, from classful addresses to subnetting.

Routing, NT, & RIP

By Gary C. Kessler, 09/01/1999

Learn how to use NT Server as a software-based router.

Alternative Address Conservation Schemes

By Gary C. Kessler, 05/01/1999

In the past few years, developers have created several methods that cleverly use available IP address space. Here are some of them.

Windows NT and DHCP

By Gary C. Kessler, 05/01/1999

The NT version of DHCP lets you assign almost 50 network settings, but most network administrators use this full-featured tool to conserve network IP addresses.



Windows is a trademark of the Microsoft group of companies. Windows IT Pro is used by Penton Media Inc. under license from owner.