Common TCP Ports

  • Telnet (23) – Login
  • SSH (22) – Secure Login
  • HTTP (80)
  • HTTPS (443) – Secure
  • SMTP (25) – Mail
  • IMAP (143/220/993) – Mail Retrieval
  • POP (109/110) – Mail Retrieval
  • DNS (53) – Domain Name
  • FTP (21) – File Transfer

互联网协议

  • Protocal
  • Internet Protocal Suite
  • Physical Layer
  • Link Layer
    • Ethernet
    • MAC
    • broadcasting
    • route
  • Network Layer
    • IP
    • subnet mask(子网掩码)
    • gateway(网关)
    • ARP
  • Transprot Layer
    • port(端口)
    • socket(套接字)
    • UDP
    • TCP
  • Application Layer

参考资料:

  1. 《互联网协议入门》(一)(二) by 阮一峰