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How To Setup a Wireguard VPN Server with PiHole

How To Setup a Wireguard VPN Server with PiHole
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Socket Programming On UNIX - TCP SYN Port Scanning(Part 3/3)

In the previous part of this guide, we saw what raw sockets actually are and how to use them to build something useful(i.e. a tcpdump clone). In the last part of this guide, we will extend our knowledge about raw sockets by writing a simple TCP SYN port scanner. Before getting into the actual code, let us understand how does a port scanner work and what are the main techniques to perform port scanning.
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Socket Programming On UNIX - Raw Sockets(Part 2/3)

In the previous part of this tutorial, we discussed what TCP sockets actually are and how to use them on Linux systems. Now we are ready to introduce a new concept of network programming: raw sockets. Raw sockets When you declare a new socket using socket()s Linux API, you are in fact delegating the kernel to take care of all the details about encoding and decoding the headers of your packages.
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Socket Programming On UNIX - Introduction To Sockets(Part 1/3)

In this series of tutorials, I will try to explain how socket programming works under UNIX operating systems(focusing on Linux) and eventually, how to use them to create network-based programs, such as a port scanner. In fact, being able to create a (SYN)port scanner is the final scope of this guide. To fully comprehend this tutorial, you should have a good knowledge of system programming in C, some knowledge of GNU/Linux systems(or any UNIX-like OS of your choice) and some knowledge of the TCP/IP stack.
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