Description: by Paul Weinstein 04/18/2002 Paul Weinstein will give a tutorial on Apache and SSL at the upcoming O'Reilly Open Source Convention, this July 22-26, in San Diego. Secure Sockets Layer (SSL), developed by Netscape Communications, and Transport Layer Security (TLS), the open-standard replacement for SSL from the Internet Engineering Task Force, are the two protocols that add encryption and authentication to TCP/IP. This article summarizes the basic concepts of how the two protocols work...