mod_auth_xradius

Requirements:
  Apache HTTPD >= 2.0.40
  apr_memcache >= 0.7.0 (optional)

Build/Install:
  ./configure \
      --with-apxs=/usr/local/httpd/bin/apxs
      --with-apr-memcache=/usr/local/httpd
   make
   make install
   # Edit The httpd.conf, add: 
   # 'LoadModule auth_xradius_module modules/mod_auth_xradius.so'

Configuration:
 Please see the mod_auth_xradius website for details:
   http://www.outoforder.cc/projects/apache/mod_auth_xradius/docs/