Hey everyone,
We have recently ran into an issue where a few of our building security management applications are no longer synchronizing with LDAP. These applications are for managing user's badge access to different buildings and badge readers. The data that we're pulling from LDAP is pretty basic, user's firstname, lastname, employeeid, group memberships, etc. The two specific apps are hosted on premesis, and are linux VMs that were provided by the security software companies.
We're a Windows domain primarily using Server 2008 and 2016 for our domain controllers (we're going to begin migrating to 2016 soon). We're using the basic version of LDAP on port 389. It has been working fine for years, but we recently discovered that user accounts haven't been synchronizing since 5/22/2020. We do have another app on a Windows Server that can pull user account info just fine.
These apps also use LDAP for authentication, which is still working. I've tried using different windows accounts to pull from LDAP and no luck. Tried manually pointing the apps to diff DCs but still the same issue. I enabled LDAP Interface Events logging on our DC yesterday, but the logs don't have much detail. Are there other logs types I should be looking for?
All help is appreciated!