Validate ntlm challenge response against an Active Directory

microsoft.public.dotnet.framework

13 Dec 2006 10:08 AM

barbutz

Hi,

Is there a way to validate ntlm challenge response string against AD ?
I wrote a simple agent application that run on the AD machine (written in C#
..net framework 2.0). The agent gets ntlm string from a web proxy server which
already identified the client using ntlm- meaning, the agent has the final
ntlm challenge response string.
Now, the agent possesses the domain\username and the ntlm string (which is
the password encrypted). My question is: How can i validate the user agains
the AD with this (i don't have the decrypted password of course)?

Please Help!