This article, List open ports and listening services, originally appeared on TechRepublic.com. One of the biggest headaches for network administrators is open ports on devices. Unless you manually ...

Open ports in any system are meant to accept network packets that can compromise the security of the computer to a great extent. For security issues, ports that are unused are generally closed by a ...

Port Query (PortQry.exe) is a command-line utility in the Windows operating system that you can use to help troubleshoot TCP/IP connectivity issues. The tool reports the port status of TCP and UDP ...

Data packets travel to and from numbered network ports associated with particular IP addresses and endpoints, using the TCP or UDP transport layer protocols. All ports are potentially at risk of ...