Type: The access privilege (allow or deny) that this policy grants.
Destination Address: Enter an IP subnet and netmask of the network target to which you want to allow or deny access. (IP address must be in the format A.B.C.D/M, where M is the subnet mask.) Otherwise, select Any. For example, if you enter 192.168.0.1/24, the rule would allow or deny the entire Class C subnet. To allow/deny a single host, use /32 as the netmask.
Application: If you select a specific application from the menu, the Protocol and Destination Port options are automatically filled with the relevant values and are not configurable.
Protocol: Enter a network protocol number (0-254), as defined by the IANA (http://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml) to allow or deny. Otherwise, select Any.
Destination Port: Enter a valid port number (1-65534) or port range (e.g., 80-443).
UDP is 17 on that (IANA) list. Perhaps you can make this work. I've learned something new - hooray!