Gateway

A gateway is a single box from your internet provider that combines a modem and a router, and often Wi-Fi as well.

What it means for you

If you add your own router or mesh system behind a gateway, you can end up with double NAT unless you switch the gateway to bridge mode or use its passthrough option. The steps differ by provider.

Guides on this topic

• Use Your Own Router With an Xfinity or AT&T Gateway

  Add your own router or mesh behind an Xfinity or AT&T gateway without double NAT: Bridge Mode, IP Passthrough and what changes, from the providers' support pages.

• Mesh Wi-Fi vs. a Traditional Router

  When one router is enough and when mesh, extenders or wired access points make more sense.

• Best Mesh Wi-Fi Systems

  Five mesh systems across budgets and home sizes, from Deco and eero to ASUS ZenWiFi.

Related terms

• Bridge mode
• Double NAT
• Router
• Modem

← All glossary terms · Search all guides for “Gateway”

Definitions are short and general. For model-specific details, check your device maker’s own documentation.