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LDAP over SSL using third party SSL
I configure LDAP on windows 2016 DC and during setup I selected default port 50001 for SSL. After installing third party SSL I can only connect to LDAP over SSL on default prot 636 but not on port 50...
By default the port that uses by the LDAP for the normal communication is TCP/UDP 389 whereas for the secure communication it will be using 636 port. Custom port will not be supported when you have configured the LDAP DC through different port.
https://social.technet.microsoft.com/wiki/contents/articles/2980.ldap-over-ssl-ldaps-certificate.aspx
https://social.technet.microsoft.com/wiki/contents/articles/2980.ldap-over-ssl-ldaps-certificate.aspx
During setup it gives available ports and suggest not to use port 636 as it is used for AD DS.