Limitation of authenticating against AD

[Dennis Xu]

Thanks for the information. So FreeRadius uses LDAP to authenticate against AD and LDAP cannot read the passwords in those formats. Apparently ACS has a different implementation on authenticating against AD that they don't care about the password format stored in AD:

http://www.cisco.com/c/en/us/td/docs/net_mgmt/cisco_secure_access_control_system/5-2/user/guide/acsuserguide/eap_pap_phase.html#wp1014889


Dennis

----- Original Message -----
From: "Alan DeKok" <aland at deployingradius.com>
To: dxu at uoguelph.ca, "FreeRadius users mailing list" <freeradius-users at lists.freeradius.org>
Sent: Wednesday, September 3, 2014 12:01:53 PM
Subject: Re: Limitation of authenticating against AD

Dennis Xu wrote:
> I am looking for confirmation that because our AD stores passwords in crypt'd or SHA1 format, we cannot use FreeRadius to authenticate against our AD using PEAP and EAP-MSCHAPv2?

  No.  AD stores it's passwords in NT-Hash format.  And it does NOT
allow FreeRADIUS (or anyone) to read those passwords via LDAP.

> http://deployingradius.com/documents/protocols/compatibility.html
> 
> Is the above link still up-to-date? 

  Yes.

  Alan DeKok.