This tutorial describes how you can host multiple SSL-encrypted web sites (HTTPS) on one IP address with Apache 2.2 and GnuTLS on a Debian Lenny server.

"We are proud to announce a new stable GnuTLS release: Version 2.6.3. GnuTLS is a modern C library that implement the standard network
security protocol Transport Layer Security (TLS), for use by network
applications. GnuTLS is developed for GNU/Linux, but works on many
Unix-like systems..."

"Today I finally decided to work out this element of our task list. We are happy that now MyServer can be distributed under the GPLv3 terms license without any exception. Previously we were using OpenSSL for the HTTPS protocol, it was giving us some licensing troubles as we needed to add an exception to the original GPLv3 license..."

"The Free Software Foundation and the GNU Project oppose publication of draft-housley-tls-authz-extns as an experimental standard..."