Glossary: TCP/IP in Depth, Part 2
ICMP port unreachable
Also written: port unreachable
The ICMP error a machine sends back when a UDP datagram arrives for a port where nothing listens. A simple UDP client never sees it, so it just times out.
Glossary: TCP/IP in Depth, Part 2
Also written: port unreachable
The ICMP error a machine sends back when a UDP datagram arrives for a port where nothing listens. A simple UDP client never sees it, so it just times out.