A flaw in Windows Firewall may prevent users from seeing all the open network ports on a Windows XP or Windows Server 2003 computer. The flaw manifests itself in the way the security application ...

I scanned my router and didn’t like what I saw.

Fred Stluka from Bristle.com just introduced me to port knocking — a method of opening ports on a firewall by trying to connect with a series of ports in a pre-determined order. The sequence of ...

Okay, I already have this thread in an attempt to replace the current firewall that is on a network that, I guess, I'm in charge of, but I think I'm going to puch that back a little because I'm a ...

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 ...

Firewalls are devices that help keep your computer safe from threats on networks. Windows includes a program called Microsoft Firewall to maintain system security. There may be occasions when you need ...

When you're planning out the network for your home lab, a customizable firewall is key to keeping your home lab (and your ...

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 ...

I have a little problem that I'd like some help with. I'm behind a firewall, but I'd like to host a game server that uses port 53. I have the option of opening certain ports from the fw but sadly, 53 ...