radius - nnrpd RADIUS password authenticator

       It  has been reported that this authenticator doesn't work with Ascend RADIUS servers, but does work with
       Cistron RADIUS servers.  It's also believed to work with Livingston's RADIUS  server.   Contributions  to
       make it work better with different types of RADIUS servers would be gratefully accepted.

       This code has not been audited against the RADIUS protocol and may not implement it correctly.

radius is an nnrpd authenticator, accepting a username and password from nnrpd (given to nnrpd by a
       reader connection) and attempting to authenticate that username and password against a RADIUS server.
       See readers.conf(5) for more information on how to configure an nnrpd authenticator.  It is useful for a
       site that already does user authentication via RADIUS and wants to authenticate news reading connections
       as well.

       By default, radius reads pathetc/inn-radius.conf for configuration information, but a different
       configuration file can be specified with -f.  See inn-radius.conf(5) for a description of the
       configuration file.

       The   following  readers.conf(5)  fragment  tells  nnrpd  to  authenticate  all  connections  using  this
       authenticator:

           auth radius {
               auth: radius
               default: <FAIL>
               default-domain: example.com
           }

       "@example.com" will be appended to the user-supplied identity, and if RADIUS  authentication  fails,  the
       user will be assigned an identity of "<FAIL>@example.com".

       The  RADIUS  authenticator was originally written by Aidan Cully.  This documentation was written by Russ
       Allbery <eagle@eyrie.org>.

       radius - nnrpd RADIUS password authenticator

-fconfig
           Read config instead of pathetc/inn-radius.conf for configuration information.

       -h  Print out a usage message and exit.

inn-radius.conf(5), nnrpd(8), readers.conf(5).

INN 2.7.3                                          2025-05-19                                          RADIUS(8)

radius [-h] [-fconfig]