Using Apache Auth Modules with SSL

SSLOptions +FakeBasicAuth

When this option is enabled, the Subject Distinguished Name (DN) of the client certificate is translated into an HTTP basic authorization username. This means that the standard Apache authentication methods seen in Chapter 6 can be used for access control. To those authentication modules, it looks as if the user has successfully provided a valid username and password. You will need to modify certain settings in your user databases; see the SSLOptions directive manual page for details.