We are using LDAP to find the list of active users. From DB we are connecting to LDAP. The DB Servers are on Linux Azure Cloud. From DB Servers to LDAP Servers we raised a Azure Firewall request for both port 636(Encrypted Port) and 389(Non Encrypted Port). Firewall rules are in place and connectivity is working. Now from DB able to connect to LDAP over port 389 but not able to connect to LDAP over port 636. For port 636 it gives following error DBMS_LDAP Still Fails: ORA-31202: DBMS_LDAP: LDAP client/server error: SSL handshake failed What needs to be done for this,please can someone suggest?