Question : checking udp port

Hi,
Just like we can use 'telnet x.x.x.x 53' to check if there are connections open on tcp port, how can i do the same for udp ?

Answer : checking udp port

Nothing I know of built into windows for this, but there are tons of third party apps that will do this.

Here is one but it is not really for the GUI users: http://nmap.org/download.html