We have a server listening on various ports. Our remote clients are sometimes unable to communicate to our servers on these ports until we get their IT team to alter their outgoing traffic rules.
I would like the client to be able to run a simple tool or script (maybe an online tool) that will tell them if they can communicate with our server on the various ports. It needs to be something very simple ie...
Connection on port 443: successful
Connection on port 21: Failed
Very grateful for any advice