Telnet UDP Port

Unfortunately telnet will only allow to test ports for TCP.

On the contrary nc can test ports for both TCP and UDP.

TCP

  • # nc -z -v -u [hostname/IP address] [port number]
  • # nc -z -v 192.168.10.12 22
  • Connection to 192.118.20.95 22 port [tcp/ssh] succeeded!

UDP

  • # nc -z -v [hostname/IP address] [port number]
  • # nc -z -v -u 192.168.10.12 123
  • Connection to 192.118.20.95 123 port [udp/ntp] succeeded!

Source : https://www.quora.com/Can-we-Telnet-UDP-port

Posted on: October 20, 2022, by :  | 92 views
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