How can i authenticate my users against Active Directory?

Talwar, Puneet (NIH/NIAID) PTALWAR at
Wed Jun 29 20:35:26 CEST 2005

See I am trying to authenticate against the AD, but in my case the RADIUS
server is running on  a Windows Server and my client is a Linux box.  But
the problem I am having is that when I try to authenticate against the AD
from my Linux box I get error message in /var/log/messages

login[4578]: pam_radius_auth: RADIUS server <Windows_Radius_Server
IP_address> failed to respond
login[4578]: pam_radius_auth: All RADIUS servers failed to respond.

When I go check the log on the Radius server I can see the login attempts
that are made from the Linux box.

So I am not sure where else I can see what I am doing wrong here.



Puneet Talwar

-----Original Message-----
From: Alan DeKok [mailto:aland at] 
Sent: Wednesday, June 29, 2005 2:05 PM
To: FreeRadius users mailing list
Subject: Re: How can i authenticate my users against Active Directory? 

Dusty Doris <freeradius at> wrote:
> You can always do an ldap search to AD for authorization and if the
> password is coming over in clear text, you could just do a bind against AD
> for authentication.  Correct?

  Yes.  But this won't work for PEAP.

  Alan DeKok.
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