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Networking Basics

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Apr 5, 2019

You may not know it, but the IPv4 address of your computer contains tons of useful information about whatever Wi-Fi network you're on. By knowing what your IPv4 address and subnet mask are telling you ...

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Jan 23, 2016

Welcome back, my greenhorn hackers!In the first part of this series, I introduced you to the basics of networking including IP addresses, ports, NAT, and DHCP. In this lesson, I want to introduce you ...

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Dec 24, 2015

Welcome back, my greenhorn hackers!As expected with Null Byte's dramatic growth over the last year, we have added many new aspiring hackers who are still lacking in the basics of networking. In additi ...

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Jul 2, 2013

In the first part of this series, we took a factual and technical look at the history of the Internet. I explained how all of these wires and servers got here in the first place. Obviously, a firm did ...

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Jul 2, 2013

If you read my article on the OSI model, you got a good overview on communications from that model's perspective, but how does that relate to TCP/IP? We're going to take it a step further, getting int ...

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Jul 2, 2013

In general, hacking and information security is not just one discipline, but a number of them, and today we will look into some of the networking concepts.In the last Hacker Fundamentals, we talked ab ...

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Apr 19, 2012

You walk over to your laptop, wiggle your mouse to wake up the screen, then fire up your browser to come visit Null Byte. Catching the article about Anonymous and how they presumably will not take dow ...

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Mar 9, 2012

Wouldn't it be nice to just sit at your buddy's house, plug into his network, and see exactly what he's doing? What if it was as easy as that? What makes packet sniffers like Wireshark such potent too ...

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Feb 28, 2012

Imagine you're in Paris and you need to get to Versailles. Looking around for directions, you come to a cold realization—you do not speak a lick of French! How are you going to get to Versailles and w ...