D-Link DAP-3520 - AirPremier N Dual Band Exterior PoE Access Point User Manual page 40

Protocol:
Use the drop-down menu to choose the appropriate protocol used by the messages: Any, TCP, UDP, Both, IMCP, or Other.
Host 1 IP Range:
The rule applies to a flow of messages for which one computer's IP address falls within the range set here.
Host 1 Port Range:
The rule applies to a flow of messages for which host 1's port number is within the range set here when the Protocol is set to TCP, UDP,
or Both.
Host 2 IP Range:
The rule applies to a flow of messages for which the other computer's IP address falls within the range set here.
Host 2 Port Range:
The rule applies to a flow of messages for which host 2's port number is within the range set here when the Protocol is set to TCP, UDP,
or Both.
D-Lnk DAP-3520 User Manual 3