Why does my console say Strict NAT?

Strict NAT can result from double NAT, CGNAT, disabled UPnP or missing port mappings. First identify the WAN IP and number of routers.

What to check

WAN/private IP; CGNAT; double NAT; UPnP; console test.

When to get help from a person

Network engineering if public inbound connectivity is required.

Show the technical detail
On a managed Wi-Fi plan

Review eero gateway/bridge topology and public-IP option; use least-privilege changes.

On another provider's router

Ask ISP about CGNAT/public IPv4 and supported router mode.

What to be careful of

Do not put a console in DMZ as the first answer.

Where this comes from: Official · see the original source ↗ · Draft—technical review · checked 17 August 2026

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