Port-scanner.exe «Firefox»

: A firewall or other security device is blocking the request, making it impossible to determine the status. Security Warnings

Because port scanning is a primary technique used by hackers to find vulnerabilities (such as "open doors" into a network), security software often flags these executables.

: No application is listening, though the host is reachable. Port-Scanner.exe

A port scanner works by sending requests to specific ports on a host and analyzing the responses to determine their status:

: It is used by network administrators to identify open TCP/UDP ports, find all network devices (including Wi-Fi routers and computers), and obtain information about those devices. : A firewall or other security device is

: Legitimate installations are usually found in C:\Program Files (x86)\Advanced Port Scanner\ .

Using the PortQry command-line tool - Windows Server | Microsoft Learn A port scanner works by sending requests to

: The application is actively listening for connections.