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, Bot Management, CDN, Cloudflare Access, Cloudflare Gateway (outbound only), Cloudflare Tunnel, Load Balancing, Stream, WAF |
| 6 Presentation layer | |
| 5 Session layer | |
| 4 Transport layer | TCP/UDP Argo Smart Routing, Cloudflare Gateway (outbound only), Load Balancing, Spectrum |
| 3 Network layer | IP, GRE, any packet/protocol Magic Firewall, Magic Transit, Magic WAN |
| 2 Datalink layer | Direct connection Cloudflare Network Interconnect (CNI) |
| 1 Physical layer | Direct connection Cloudflare Network Interconnect (CNI) |