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<P>Access-Challenge messages are generated by an authentication method that needs them.</P>
<P>Look at the auth method you intend to use. Many do not as sufficent info is in the Access-Request.<BR>Usually a NAS generates a CHAP challenge locally and includes it in the A-R.</P>
<P>EAP methods use a lot of Access-Challenges, but that probably doesn't help.<BR><BR>I don't know anything about your PAM or unix OTP to make any further comments.<BR>If you are rolling your own authentication, then you'll have to do it yourself.</P>
<P>Dave.<BR><BR>Jun 23, 2008 10:01:07 AM, freeradius-users@lists.freeradius.org wrote:<BR></P>
<BLOCKQUOTE style="BORDER-LEFT: rgb(102,153,204) 3px solid"><BR>Hi<BR>I managed to change radius server rlm_unix code to generate<BR>ACCESS-CHALLENGE by looking at rlm_example code.<BR><BR>Can someone please let me know is there any way i can tell radius<BR>server to generate ACCESS-CHALLENGE with out making changes as i did<BR>it above?<BR><BR>Regards,<BR>Sudarshan<BR><BR><BR>On Wed, Jun 18, 2008 at 9:07 PM, Sudarshan Soma <sudarshan12s@gmail.com> wrote:<BR>> Hi ,<BR>> I am planning to simulate ACCESS-CHALLENGE to authenticate the client<BR>> which i plan to add it in pam-radius module (pam_radius-1.3.17) with<BR>> out using radius server. Iam still reading the docs, incase if<BR>> someone helps me with the following queries, it would be really<BR>> helpful.<BR>><BR>> I learned that the rlm_otp has the implementation of the same. Could<BR>> anyone please let me know these:<BR>> - any radius client which lets radius server to ask for ACCESS-CHALLENGE<BR>> -- (echo 'User-Name="userX"'; echo<BR>> 'CHAP-Password="secretpass"') | /usr/local/bin/radclient -x<BR>> 192.168.11.94:1812 auth testing123 is not helping<BR>> - how do i test rlm_otp module, any radius client program..<BR>><BR>> Regards,<BR>> Pavan<BR>><BR>-<BR>List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html<BR></BLOCKQUOTE></BODY></html>