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 ...

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 ...

10 ways to check ports in Linux to help troubleshoot systems Your email has been sent System and network troubleshooting often involves checking and obtaining information about ports to ensure ...

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 ...

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 ...

File-sharing applications and other programs that access a transmission control protocol/Internet protocol network use ports to route traffic to a destination. Most routers, however, use a firewall to ...

The recent WannaCry and NotPetya attacks were made possible by gross IT negligence. That they used a purportedly US-developed cyber weapon (which was released by a hacking group called Shadow Brokers) ...

Mac OS X comes with a built-in firewall service that can be used to protect your Mac from online security risks. The firewall sits between OS X and the internet and only allows incoming traffic to ...

You could try telneting to port 139 from an outside machine. If you get anything other than an access denied, you likely have an open port.

Anywhere that multiple computing devices share a single Internet connection there is a router. Recently routers from Linksys, Netgear, Cisco and others were found to have a huge security flaw. This is ...