2023 Boost - Week 13

📺 https://youtu.be/dJPJTKhvkBA

• Grok Internet networking.
  • History
    • https://youtu.be/qvUYPm2nVXM
  • Ethernet
    • Routing
    • Local Area Network (LAN)
    • Wide Area Network (WAN)
    • tracepath, traceroute, pathping, tracert, mtr
    • Mac address, Ethernet address (machine address)
    • Dynamic Host Control Protocol (DHCP)
    • Network Interface Controller (NIC)
    • Ports
    • Pub door analogy
    • Reserved ports
    • netstat, nmap, lsof
    • Network Address Translation (NAT)
  • Firewalls
  • IP
  • TCP/IP
  • UDP
  • Domain names
    • Registrars
    • Discovery
      • whois
      • nslookup, dig
      • https://shodan.io
    • localhost 127.0.0.1
    • Reserved
    • /etc/hosts
  • HTTP, HTTPS (TLS)
  • Secure Shell
    • ~/.ssh/config
  • Beware of legacy: FTP, Telnet, Gopher, IPP
• Know the common network query commands.
  • dig, nslookup
  • ifconfig, ipconfig, ip, ss
  • ping
  • nmap
  • ncat/nc
  • iptables, ufw