How to enable Access-challenge in Free radius

Alan DeKok aland at
Wed May 6 21:02:37 CEST 2015

On May 6, 2015, at 8:14 AM, sridhar Varadarajan <sridharww at> wrote:

> I have installed Free radius in a windows box and using this radius server to authenticate into my application. I now come across with another need like in addition to authentication i need to overhead with one more option ie. "Access challenge".

  What does that mean?

  Some authentication methods use Access-Challenge.  Others don't.  You can't just add Access-Challenge to something and expect it to work.

> Can anyone tell me in which file & what needs to be configured so that my radius server can put back a Access-challenge request towards my application so upon providing replying for this challenge request from my application, my radius server should allow me to login in.

  Can you be more specific?  What do you want to do?  Which packets are used?  What's in the packets?

  Alan DeKok.

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