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 ...

I have written some Monte Carlo simulation code that's designed for big parallel simulations, and it communicates over TCP/IP. I was running some quick tests with it, and decided to use port 1066 for ...

When working with the Cisco IOS, it’s very important to know your TCP and UDP port numbers. This is especially true when creating IOS access control lists (ACLs). Let’s take a closer look. What’s a ...

Google Voice is a great service, but changing your phone number can seem like pulling teeth. If you've been thinking about porting your existing number to Voice, here's what you need to know to make ...

Some iPhone customers trying to port their mobile numbers from carriers such as Verizon are being told by the iTunes software and AT&T customer service reps that their current mobile number 'cannot be ...