Error creating connection: LDAP Result Code 200 "Network Error": dial tcp: i/o timeout

Hi everyone, first time here. I have Rancher 2.x installed as a service (rancherd) and not as a docker container. I’m not sure if that makes a difference. I am setting up Active Directory and I get the following error when I try to connect:
Error creating connection: LDAP Result Code 200 “Network Error”: dial tcp: i/o timeout
I am able to send a command from the terminal on the server to the AD server and get a good response with CA back, so I am sure it is not the rancher server itself. It seems like Rancher UI itself is isolated from the network/internet. Any ideas?

Thank you again,
Bill