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Skit3000 · Posted: Thu Oct 21, 2004 10:42 am Post subject: Catching games with "netstat"

Hello, I want to make a little tool which uses the "netstat" command to see if specific ports are opened by multiplayer games. I now use "netstat -a -n", but it seems that only the external address of TCP ports are shown, not the ones with UDP. Now the problem is that most (if not, all) games use the UDP protocol to connect to a server. Does anybody knows how to get a list of all outgoing UDP connections, including their IP addresses and ports?

Skit3000 · Posted: Thu Oct 21, 2004 10:45 am Post subject:

Here is a little "netstat" capture, so you can see what I mean:

jules · Posted: Thu Oct 21, 2004 3:43 pm Post subject:

Um, I think this is probably because UDP is a connectionless protocol so all netstat can show is that something is listening for connections. The two things are only in contact for as long as it takes to send or receive the data. Whether or not netstat would show this if it happened to run at the right instant I don't know, but even if it did, chances are you would miss it.

There are utilities that can monitor this sort of thing but they do it by hooking into the TCP/IP stack I think. Take a look at TCPView on the ntinternals or sysinternals site. I think there is a command line version that might be useful to you.

Skit3000 · Posted: Thu Oct 21, 2004 5:23 pm Post subject:

Julian, I'm afraid that the TCPview program has the same problem as the netstat command. Sad