The AD Pro Toolkit supports LDAPS on port 636.
What LDAPS is
LDAPS (port 636) refers to LDAP over SSL/TLS, a secure, encrypted version of the Lightweight Directory Access Protocol. It is commonly used to securely communicate with Active Directory Domain Services (AD DS) or other LDAP directories.
Enable LDAPS
- Click Settings > Domain Settings.
- Edit your connection and select Use LDAPS.
- Click Save.
To confirm it is working, take a packet capture in Wireshark between the machine running AD Pro Toolkit and your domain controller. Traffic should now be on port 636 rather than 389.

