Unable to query LDAP server on port 389 on the Win2K domain controller from a different subnet
Solution 1:
3 questions:
- Can you query port 389/tcp from a computer on the same LAN with the LDAP server?
- Is the OpenVPN server the "firewall" between those lans, or does a third gateway exist? What are the operating systems for these devices?
- On the LAN where the LDAP server sits can you setup a machine and run a netcat listener on port 389/tcp ? If so, does the connection reset immediately or not?
Solution 2:
ms ldap has an issue that results in immediate resets to new connections on tcp 389
http://support.microsoft.com/kb/2000061