3 links
HTTP Over TLS
ietf.org
Document providing information and guidelines on using TLS to secure HTTP connections.
SMTP Service Extension for Secure SMTP over TLS
ietf.org
Document describing the negotiating and upgrading plain socket connection to secure socket connection.
SSL encryption check
fortify.net
Access this frameset to test if your browser supports TLS/SSL, and for a report of which cipher and key length is used.