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    C Where can I learn Very low level networking in C for making own hacking tools ? ( All books and PDF's are focused only on TCP/IP. Not on L2)

    I want to be a elite hacker not an script kiddie. All online course and PDF's a are teach how to use hacking tools ( like nmap, metaspolit..etc ) they don't teach how that tool works and how to make those tools. So where can I learn to make own port scanner by using raw socket and packet...