Link
  • Protocols for easy sniffing:
    • TELNET
    • HTTP
    • SMTP (Simple Mail Transfer Protocol)
    • NNTP (Network News Transfer Protocol)
    • POP (Post Office Protocol)
    • FTP
    • IMAP (Internet Message Access Protocol)
  • Tools:
    • Wireshark (tshark cli)
    • tcpdump
    • windump
    • dsniff
    • ettercap