The following are the ports typically used when Admin Arsenal communicates with an Active Directory server:

Port 389 (LDAP)
Port 138 & 139 (NetBIOS)
Port 88 (Kerberos)
Port 53 (DNS)
Port 445 (SMB)
Port 135 (RPC)

* Note: RPC will use other ports as well. Port 135 is used to start communication and the RPC server will assign another port above 1024 for further communication.