RELATED: What's the Difference Between TCP and UDP? In that case, you’ll need to identify the app that already has that port in use. But once in a while, you might encounter an app that’s set to listen for traffic on the same port that another app already has in use. For the most part, you don’t need to worry about ports. If the IP address is akin to a street address on a piece of mail, the port is something like the name of the person at that residence who gets the mail.
RELATED: How to Port Forward on Your Router Once the traffic reaches the right place, the device needs to know which app or service to send the traffic on to. When one device sends traffic to another, the IP address is used to route that traffic to the appropriate place. Use NirSoft CurrPorts to View What is Listening on a PortĪn IP address specifies a computer - or other network device - on a network. Option Two: View Port Use Along with Process Identifiers Option One: View Port Use Along with Process Names Use Built-In Tools to See What Is Listening on a Port
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