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How to test ports on my local computer and the internet?

garryshape asked
Last Modified: 2020-01-27
Is there a way I can test a variety of ports on my local computer. Whine a firewall? When I go to port testing sites it just scans my external IP but I’m wanting to see if my computer and a corresponding server are capable of communicating over a port with my firewall in between.
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David Johnson, CDThe More I know, the more I don't know
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