How can I test what ports are blocked on my computer?

[Zak]

Is there a freeware program that I can run that will tell which ports are
blocked?

Thanks.

 

[Guest]

go to google.com and search for "port scanners". there are tons of free port
scanners out there...

 

[Colon Terminus]

Here 'ya go:
https://www.grc.com/x/ne.dll?bh0bkyd2