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Tip: list all actively listening ports on a Windows machine

Finding out what ports are open on a machine is something I often need to do, and I usually stuff around for ages trying to figure out whether a particular port is open. The fastest way I’ve (just) found is by opening a console and running netstat -a, or netstat -an to show IP and port numbers rather than machine and service names.

Now that I know that the port’s definitely open, I’ve just got to figure out why the service still isn’t working…

This entry was posted on Friday, November 7th, 2008 at 11:07 am and is filed under OS, Tech Support. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

One Response to “Tip: list all actively listening ports on a Windows machine”

  1. Jylan Wynne Says:
    November 9th, 2008 at 10:48 am

    Hey Ben, seems to work on my mac as well in Terminal (which is used to access the UNIX part of Mac OS X). It looks like it returns some interesting information, must read the man page for it to see what it does exactly :-) .