So we recently got a new part time client who had an ISA server. We replaced the ISA server for a SonicWall NSA 3500. They were using a Nortel Extranet Switch (1000) as a VPN connectivity device.
Anyways, to make a long story short, I created the VPN to authenticated to LDAP, using the Users OU.
I can create a new user, and they can authenticate just fine. Existing users cannot, the SonicWall says that it can't Authenticate to LDAP when performing a test on the SonicWall. So, i'm at a loss for what to do. All users new and old are in the same OU, groups are different...one is just a domain user another is a domain admin. Any ideas would be appreciated. My mind is toast right now.