UDP test tool

[cisco_lite]

I have opened a UDP port on the access-list and would like to test the connectivity.

Would you know of any reliable UDP test tool which I can install on a client (Windows/Linux etc) and initiate a UDP request (on specific port) to the server which runs UDP service.

Thanks.

[cisco_lite]

Ok. Let me get it right. Is it necessary to initiate an nc command from the receiver end if there is already an application running on it on the relevant udp port.

In my case, I have just initiated nc from sender side and expect the application on receiving end to send back the packets.

[hobbe]

Actually no you do not need a sender and a reciever, but it helps out to know what you would expect back.

some applications dont send a response.

and this is especialy true for UDP applications. syslog fx. simply because its just one way communication.

Since UDP is a connectionless protocol you dont have the status of the connection in the protocol to help you know if or if not you have buggered up somewhere.

Thats why I like to use a sender AND a reciever when testing rules. especially

UDP.

It just feels better to have control of both ends.