# 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, DNSAuthoritative 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/UDPArgo Smart Routing, Cloudflare Gateway (outbound only), Load Balancing, Spectrum |

3 Network layer | IP, GRE, any packet/protocolMagic Firewall, Magic Transit, Magic WAN |

2 Datalink layer | Direct connectionCloudflare Network Interconnect (CNI) |

1 Physical layer | Direct connectionCloudflare Network Interconnect (CNI) |