Hello, all! I am currently learning cybersecurity from the beginning, as I aim to become a SOC analyst. I am using TryHackMe to learn everything that I need to know from the ground-up, and I would like to cover what I had been learning in the past week thanks to TryHackMe.
I took notes and learned the first module, Networking Fundamentals (before that was changed to be the fifth module recently). I would like to summarize all that I have learned to help other beginners entering the field.
When connecting with the internet, you need an IP address and a MAC address. Your IP address is used to identify you over the internet and changes, and the MAC address is your “fingerprint” that can’t change (but it can be spoofed!).
A router is behind moving data from one network to another, just like a GPS. A switch can send traffic to multiple different devices. We can split a network to smaller ones through the use of subnetting, to make things more manageable and secure!
There’s also what’s called Address Resolution Protocol (or, ARP for short) to find the MAC address that belongs to an IP address. There’s ARP Request and ARP Reply.
