How to test COM port? Complete serial port testing guide
Test remote network port connection in Windows 10 Test-NetConnection -ComputerName COMPUTER_NAME -Port PORT_NUMBER. Replace the COMPUTER_NAME portion with the actual remote PC name or IP address. Specify the port you need to connect to instead of the PORT_NUMBER portion. For example, let's test the connection to the DNS port (53) of the public Google DNS server (8.8.8.8). Test-NetConnection The Test-NetConnection cmdlet displays diagnostic information for a connection. It supports ping test, TCP test, route tracing, and route selection diagnostics. Depending on the input parameters, the output can include the DNS lookup results, a list of IP interfaces, IPsec rules, route/source address selection results, and/or confirmation of connection establishment.
Jul 03, 2017
How to Find Open and Blocked TCP/UDP Ports
The Test-NetConnection cmdlet displays diagnostic information for a connection. It supports ping test, TCP test, route tracing, and route selection diagnostics. Depending on the input parameters, the output can include the DNS lookup results, a list of IP interfaces, IPsec rules, route/source address selection results, and/or confirmation of connection establishment.
Test-NetConnection The Test-NetConnection cmdlet displays diagnostic information for a connection. It supports ping test, TCP test, route tracing, and route selection diagnostics. Depending on the input parameters, the output can include the DNS lookup results, a list of IP interfaces, IPsec rules, route/source address selection results, and/or confirmation of connection establishment.