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 ...

A port is a numeric identifier for software that runs on a computer, like Web server or email server software. When a port is open, it's accepting connections from the outside world. It's not uncommon ...

Press "Windows-R" to open a Run box. Type "cmd" -- without quotes here and throughout -- in the "Open" field, then press "Enter." If a User Account Control message displays, click the "Yes" button. A ...

A Port basically serves as an interface between your computer and the internet or other computers in the network. Every communication over the web is exchanged using these ports, so they are an ...

Though Firewalls are necessary when your computer is connected to the Internet, they can cause problems trying to get Internet aware programs working properly. For example, if you wanted to host a ...