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Networking

What are PPP and PPPoE?

Point To Point Protocol (PPP) and Point To Point Protocol over Ethernet (PPPoE) are network protocols that allow data communication between two network entities or points. Throughout the documentation for both protocols, points are referred to as nodes, computers, or hosts. The protocols are similar in design with a major difference – PPPoE is encapsulated…

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Facts About Port Scanning

Each individual computer runs on multiple ports. For instance, when a person opens his or her email, the computer’s server will open a port through which new mail will be downloaded through a connection to the email server. Certain ports on an individual’s personal computer are open continually, making them a target for any potential…

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What is a Port?

To the uninitiated or the otherwise-gifted computer user, technical geek-speak can be rather frustrating and aggravating. When instructions are filled with such things as “port,” “TCP,” “UDP,” and other acronyms or technical terminology, the user feels more isolated and rarely finds a solution or comprehension. Fortunately, comprehension is just moments away. Port Picture a bay…

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What is Port Forwarding?

Port forwarding, or tunneling, is the behind-the-scenes process of intercepting data traffic headed for a computer’s IP/port combination and redirecting it to a different IP and/or port. A program that’s running on the destination computer (host) usually causes the redirection, but sometimes it can also be an intermediate hardware component, such as a router, proxy…

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What is a Ping?

What is a Ping?

For those who play golf on the weekend, “Ping” is a brand of golf clubs designed to help you hit the ball straight and with precision. For those of us (golfers and non-golfers) who spend a lot of time on the Internet, “ping” is a term that relates to a test to find out how…

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WAN IP Address. LAN IP Address. What

Why Is My WAN IP Different from My LAN IP?

What do you mean I have two IP addresses? One day, as you’re poking around your computer’s networking preferences or maybe hooking up a new router, you might suddenly become aware of an interesting bit of information. There are two different IP addresses involved with you’re getting online and connected to the world. There’s the…

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The VPN Internet Kill Switch explained

The VPN Internet Kill Switch explained

VPN Kill Switch: What Is It There For? A Virtual Private Network (VPN) is essential for anyone who uses the Internet because it addresses the top three online concerns: Security Privacy Anonymity But not all VPNs are created equal. For instance, what happens if, for some reason, your VPN connection were to get disconnected while…

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What is a Gateway?

What is a Gateway and What Does it Do?

A gateway is a node (router) in a computer network, a key stopping point for data on its way to or from other networks. Thanks to gateways, we are able to communicate and send data back and forth. The Internet wouldn’t be any use to us without gateways (as well as a lot of other…

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