radius.so - RADIUS authentication plugin for pppd(8)


   pppd [ options ] plugin radius.so


   The  RADIUS  plugin for pppd permits pppd to perform PAP, CHAP, MS-CHAP
   and MS-CHAPv2 authentication against a RADIUS  server  instead  of  the
   usual /etc/ppp/pap-secrets and /etc/ppp/chap-secrets files.

   The  RADIUS  plugin is built on a library called radiusclient which has
   its own configuration files  (usually  in  /etc/radiusclient),  consult
   those files for more information on configuring the RADIUS plugin


   The RADIUS plugin introduces one additional pppd option:

   radius-config-file filename
          The  file  filename  is  taken as the radiusclient configuration
          file.  If  this  option  is  not  used,  then  the  plugin  uses
          /etc/radiusclient/radiusclient.conf as the configuration file.

   avpair attribute=value
          Adds  an  Attribute-Value  pair  to  be  passed on to the RADIUS
          server on each request.

          Sets Radius NAS-Port attribute to number equal to interface name

          Sets Radius NAS-Port attribute value via libradiusclient library


   To  use  the plugin, simply supply the plugin radius.so option to pppd,
   and edit /etc/radiusclient/radiusclient.conf appropriately.  If you use
   the  RADIUS  plugin,  the  normal  pppd  authentication schemes (login,
   checking the /etc/ppp/*-secrets files) are skipped.  The RADIUS  server
   should  assign  an  IP  address to the peer using the RADIUS Framed-IP-
   Address attribute.


   pppd(8) pppd-radattr(8)


   David F. Skoll <dfs@roaringpenguin.com>



Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.