Active Directory, incoming and outgoing connections
135 (TCP) – NetBIOS
389 (TCP/UDP) – LDAP
636 (TCP) – LDAPS
3268 (TCP/UDP) – Microsoft Global Catalog
88 (TCP/UDP) – Kerberos
464 (TCP/UDP) – Kerberos
SQL Server, incoming and outgoing connections
135 (TCP) – Transact-SQL debugger
1433 (TCP) – SQL Server default instance
1434 (UDP) – SQL Server Browser service
4022 (TCP) – Service Broker
Microsoft CA, incoming and outgoing connections
135 (TCP) – NetBIOS
389 (TCP) – LDAP
636 (TCP) – LDAPS
The port used for certificate requesting is DCOM/RPC74
Ports used by Indeed CM operator and user workstations
DNS
53 (TCP/UDP), outgoing connections
Web applications, HTTP, HTTPS
80 (TCP), incoming and outgoing connections
443 (TCP), incoming and outgoing connections
3The example is valid for Gmail. Port number might be different with other mail services.
4Microsoft CA is implemented using DCOM technology. The DCOM applications use random TCP port numbers from upper range by default. It is also possible to set the CA to use an explicitly defined TCP port.