Port forwarding is necessary if the device is that needs to
connect to the unsecured world of the Internet.
Of course, before opening port or doing any port forwarding
make sure that security is in place. Firewall rules, software configuration are
properly set, up-to-date anti-virus and other settings that needs to be done to
secure the system.
PowerShell can test whether a remote port is open or a Port
Forwarding rules on either on the Firewall or router is set correctly.
Here’s a one liner code, to check whether the Port is open
or not.
Both one line code below does the same thing, check whether
the Port is open or not.
1 . New-Object System.Net.Sockets.TCPClient -ArgumentList "Remote.Public.IP.Address", 3389
2. Test-NetConnection -Port 80 -InformationLevel Detailed
Replace the port number, with any port number to be tested.
If the connected property on the displayed output is true,
then the port is open.
More details on the link below:
No need, for a third-party website just to check for port
connectivity. PowerShell can do it right on your workstation or computer.
Cheers..till next time..happy scripting.
================================
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