How do you test to see if on a computer running Windows 2K has certain ports open for UDP? Netstat -a for all UDP ports returns *:*. It doesn't say if it is listening.

i believe something is wrong here. iam using winxp pro,proxomitron,Zone alarm(at the highest settings),using xp firewall too. (even that is contraindicated). there are too many listening ports here ...

If you’re looking for a way to discover which ports are standing wide open on network machines, read about a powerful cross-platform solution that will do the trick. Editor’s note on June 4, 2015: ...

When you use the NETSTAT utility to investigate the status of all the current TCP/IP connections on a particular system, you’ll need to be able to identify the port numbers and tell which services ...

Managing your office network is important, especially if you have concerns about high bandwidth usage or if you need to configure the company firewall to block or accept specific ports that office ...

Open ports can expose your business's computer or network to security breaches. Discovering and closing open ports is essential for keeping your network safe. You can identify open ports on a Windows ...

This article examines netstat and some of it many outputs, in relation to the open systems interconnect (OSI) model. A quick examination of netstat's man pages provides a description of the program: ...