OSI Model
- Layer 7 - HTTP, SSH, FTP
- Layer 6 - TLS
- Layer 5 - SMB, RPC
- Layer 4 - TCP, UDP, QUIC - (segments) - (Port)
- Layer 3 - IP, ICMP - (packets) - (IP)
- Layer 2 - Ethernet, WiFi - (frames) - (MAC)
- Layer 1 - Electrical signals - (bits)
Resources
YT (opens new window)