Network layers
Below is a list of the different layers that makes up the open systems interconnection (OSI) model and the associated Cloudflare products.
| Network layer | Protocol and related products |
|---|---|
| 7 Application layer | HTTP, DNS Authoritative DNS, CDN, Cloudflare Tunnel, Stream, Load Balancing, WAF, Bot Management |
| 6 Presentation layer | |
| 5 Session layer | |
| 4 Transport layer | TCP/UDP Spectrum, Argo Smart Routing, Load Balancing |
| 3 Network layer | IP, GRE, any packet/protocol Magic Transit, Magic Firewall, Magic WAN |
| 2 Datalink layer | Direct connection Cloudflare Network Interconnect (CNI) |
| 1 Physical layer | Direct connection Cloudflare Network Interconnect (CNI) |