OSI Model — Interactive

🔍
Normal
Select a scenario…
7
Application
HTTP · HTTPS · DNS · FTP · SMTP · SSH
All
6
Presentation
TLS · SSL · JPEG · MPEG · ASCII
People
5
Session
NetBIOS · RPC · SIP · PPTP
Seem
4
Transport
TCP · UDP · QUIC · SCTP
To
3
Network
IPv4 · IPv6 · ICMP · OSPF · BGP
Need
2
Data Link
Ethernet · Wi-Fi 802.11 · MAC · PPP
Data
1
Physical
USB · DSL · Fiber · Bluetooth · RS-232
Processing
Packet traveling up · click layer to expand · click protocol tag for header breakdown · press 1–7
TCP — Reliable
7
Application
HTTP · DNS
6
Presentation
TLS · JPEG
5
Session
NetBIOS
4
Transport
TCP ✓ reliable
3
Network
IP · ICMP
2
Data Link
Ethernet
1
Physical
Fiber · USB
UDP — Fast
7
Application
DNS · RTP
6
Presentation
skipped
5
Session
skipped
4
Transport
UDP ⚡ fast
3
Network
IP · ICMP
2
Data Link
Ethernet
1
Physical
Fiber · USB