Apache: The Definitive Guide, 2nd Edition, by Ben Laurie and Peter Laurie, O'Reilly & Associates, 1999.
Crypto: How the Code Rebels Beat the Government--Saving Privacy in the Digital Age, by Steven Levy, Viking, 2001.
Cryptography Decrypted: A Pictorial Introduction to Digital Security, by H. X. Mel, and Doris M. Baker, Addison-Wesley, 2001.
Secrets and Lies: Digital Security in a Networked World, by Bruce Schneier, John Wiley & Sons, 2000.
SSL and TLS: Designing and Building Secure Systems, by Eric Rescorla, Addison-Wesley, 2000.
SSL and TLS Essentials: Securing the Web, by Stephen Thomas, John Wiley & Sons, 2000.
Understanding Public-Key Infrastructure: Concepts, Standards, and Deployment Considerations, by Steve Lloyd and Carlisle Adams, Macmillan, 1999.
