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 ...

If your computer doesn't have built-in Wi-Fi or an ethernet port, or if those connections aren't working properly, you're not stuck without internet. USB ports offer multiple ways to get online, ...

A router's wide area network (WAN) port acts as its gateway to other networks, providing an interface for the router to send outgoing traffic over. Computers should not be connected to a router's WAN ...

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 ...

To most, the term "internet port scanning" might sound like the kind of nonsensical technobabble you would hear on an episode of "NCIS." However, port scanning is a very real and widely used method, ...

The underpinnings of Back to My Mac are fairly dense, but interesting, as Apple is mashing up a lot of protocols to punch tunnels through Internet architecture that wasn’t designed to be tunneled ...