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Networking

TCP/UDP Port Number List

IANA Port Number List The port numbers are divided into three ranges: the Well Known Ports, the Registered Ports, and the Dynamic and/or Private Ports. The Well Known Ports are those from 0 through 1023. DCCP Well Known ports SHOULD NOT be used without IANA registration. The registration procedure is defined in [RFC4340], Section 19.9.…

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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

A VPN Kill Switch Is a Special Feature that Protects Your Privacy

Without a reliable VPN Kill Switch, you could be caught with your digital pants down.  A Virtual Private Network (VPN) is essential for anyone who uses the Internet because it addresses the top three online concerns: security, privacy and anonymity. Along those lines, a VPN kill switch is a feature you want you on your…

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