Where to learn about the core of how data flows through ports and network and create own exploits and auxillaries?

[aarooni2018]

hello need some help on that :'))

[Mifu3301]

tryhackme, the networks rooms are very helpful, then go on read teaming rooms

[Anon9213]

download wireshark and inspect your own network. open up some app and see what kind of traffic it produces. then try to modify some packets to see if you can get it to produce some interesting results

[JohnnyBeGood40]

wireshark, nmap, netcat are all tools hackers use on linux