Portqry Udp -

UDP port 33456: NOT LISTENING (ICMP Port Unreachable) Want to see if something on your own machine is bound to UDP but not responding?

portqry -n 192.168.1.1 -p udp -e 33456 You might get: portqry udp

UDP port 53 (domain service): LISTENING Because Google DNS replies to a proper DNS query. But if you send to a random high UDP port with no service: UDP port 33456: NOT LISTENING (ICMP Port Unreachable)