Apache HTTP Server Version 2.2

Apache > HTTP Server > Documentation > Version 2.2

#### Please note

This document refers to a legacy release (2.2) of Apache httpd. The active release (2.4) is documented here. If you have not already upgraded, please follow this link for more information.

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# Apache SSL/TLS Encryption

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The Apache HTTP Server module `mod_ssl` provides an interface to the OpenSSL library, which provides Strong Encryption using the Secure Sockets Layer and Transport Layer Security protocols. The module and this documentation are based on Ralf S. Engelschall's mod_ssl project.

## Documentation

- Introduction
- Compatibility
- How-To
- Frequently Asked Questions
- Glossary

## mod_ssl

Extensive documentation on the directives and environment variables provided by this module is provided in the mod_ssl reference documentation.

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