Any user may at some point suspect that a program or service is sharing more information than usual with the outside world. The first step to confirm that behavior is to monitor ports and outgoing connections. PortExpert is a simple application without cost that reports various details, including remote IP address, associated process, and protocol.
Applications are not always entirely honest when they connect to the Web. At best, they warn the user that they require a connection to check for available updates, but nothing more. Even the operating system itself adopts a similar approach, maintaining active connections or listening on ports that the user completely ignores. Assuming that all outgoing connections are harmful to the computer would be a real madness, however, just like with many apps on Android, there is never a shortage of software that takes unnecessary liberties during its operation.
How to monitor ports and connections
PortExpert is a small program that reports each of the outgoing connections of the computer. In the list appear the identifiers linked to the processes, the active protocol (whether TCP or UDP), the name, the remote IP address to which it is connecting, and the remote port. If any of the addresses is stranger than usual, just by clicking on the "whois" button the user will receive a detailed report about who is responsible for the address and the country in which it is located. There are also two options that allow the visualization of system processes and local connections. The Freeze Time button is used to pause updates on a port, so it can be investigated calmly.
The only detail that the user must take into account when installing PortExpert is that its official distribution package includes a couple of sponsors. Both can be easily ignored, and as an alternative, the developer offers a clean installer and a portable edition that works wonderfully on any maintenance USB drive. At first glance, anyone would come to the conclusion that there are more complete programs, such as CurrPorts from Nirsoft, but that does not mean PortExpert fails to do a good job.
Official website and download:
https://old.neoteo.com/como-supervisar-toda-la-actividad-de-tu-conexion-de-internet/