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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)