The UDP Service Sweeper auxiliary module allows us to detect interesting UDP services. Since UDP is a connectionless protocol, it is more difficult to probe than TCP. Using an auxiliary module like the UDP Service Sweeper can help you find some low-hanging fruit, in a timely manner.
UDP Service Sweeper
How to do it...
To run the UDP Service Sweeper, select the auxiliary/scanner/discovery/udp_sweep module and set the target address range in RHOSTS:
msf > use auxiliary/scanner/discovery/udp_sweep
msf auxiliary(udp_sweep) > set RHOSTS 192.168.216.0/24
RHOSTS => 192.168.216.0/24
msf auxiliary(udp_sweep) > run
[*] Sending 13 probes to 192.168.216.0->192.168.216.255 (256 hosts)
[*] Discovered NetBIOS on...