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Networking

HDG Explains: What Is a Computer Network?

A computer network is a set of interconnected computers that are connected wirelessly or via cabling for the purpose of sharing media or data. The computers on a network, also known as nodes, can share resources including access to the internet, printers, and file servers, or allow electronic communications. A …

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How To Fix VPN 800 errors

Active internet users who value their privacy should invest in the use of a VPN. A good VPN service can help secure your connection and keep all online activity anonymous to shady websites seeking to sell your private information to the highest bidder. They can also allow you to circumvent …

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Can Connect to Wireless Router, but not to the Internet?

It’s hard to imagine that just two decades ago, only about one percent of the world’s population was online. Today, more than 4.3 billion people are actively using the internet, which is more than half of the global population. That’s how important having an internet connection is. A few things …

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What Is Localhost and How Can You Use It?

The localhost – also referred to as ‘the loopback address’ – is used to establish an IP connection or call, to your own computer or machine. The loopback address is typically used in the context of networking and provides a computer the capability to validate the IP stack. Anyone with …

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How to Find Open and Blocked TCP/UDP Ports

There’s a good chance you’ve happened upon this article because an application you’re trying to run is complaining about a “port” being blocked or you’ve read about how leaving certain “ports” open on your network can be a security problem.  Either way, by the end of this piece you’ll not …

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The Easiest Raspberry Pi Projects for Beginners

Raspberry Pi’s are tiny computers that can be used for programming projects ranging from gaming to smart home trackers. They are affordable, portable, and user-friendly. You can do some powerful things by learning how to control and program the Raspberry Pi. Not sure which Raspberry Pi project to take on …

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HDG Explains : What Is RFID & What Can It Be Used For?

RFID or Radio-Frequency Identification technology is everywhere. Employee ID cards, on items you buy at a store and even inside our pets. It’s a simple yet ingenious technology that is coming into its own in a world where everything is increasingly digitized. Quite impressive for a technology that’s been in …

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How To Fix Packet Loss & Know When It’s a Problem

Does your network connection seem slower than usual? It could be caused by issues with your modem, router, WiFi signal, a slow DNS server, or even devices on your network saturating your bandwidth. While these are the more common problems that you’d think of whenever your network connection is slow, …

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