"This how-to is Debian specific but could be ported to other distributions since the concept is the same. In order to use TLS Extensions we have to patch and recompile apache2 and recompile OpenSSL with the enable-tlsext directive. Since TLS Extensions are relatively new, some internet browsers will not work so the apache2 server will deliver just the default site as http 1.0 does on an http 1.1 server..."