Open vs. Moderate vs. Strict NAT: What Gamers Need to Know

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An Open NAT type can make multiplayer connections easier, but it does not automatically lower ping or increase download speed. NAT type describes how easily other players and game services can initiate connections to your console or PC. It matters most for peer-to-peer matchmaking, hosting, parties, and voice chat.

What NAT does on a home network

Network Address Translation lets several devices share one public internet address. Your router gives each phone, console, and computer a private address, then keeps track of the traffic moving between those devices and the internet.

This is normal and useful. The problem appears when an online game needs an incoming connection that the router does not know how to send to the correct device. Console network tests describe that reachability with labels such as Open, Moderate, or Strict.

NAT type is separate from bandwidth and latency. A fast fiber connection can still show Strict NAT, while a slower connection can show Open NAT. Changing NAT may solve failed party invites or matchmaking, but it will not fix distant servers, Wi-Fi interference, bufferbloat, or an overloaded game service.

Open, Moderate, and Strict NAT explained

• Open NAT: The device can generally establish peer-to-peer connections with players using any NAT type. Hosting and party features are least restricted.
• Moderate NAT: Connections usually work with Open and other Moderate users, but some Strict users may be unreachable.
• Strict NAT: The device can typically connect only to players or hosts with Open NAT. This can cause failed matchmaking, disconnected sessions, missing voice chat, or difficulty hosting.

Nintendo’s official NAT compatibility table illustrates the basic pattern: Open can connect across all three categories, Moderate cannot connect to Strict, and Strict-to-Strict connections fail.

Why console labels do not match

Xbox commonly uses Open, Moderate, and Strict. PlayStation reports Type 1, Type 2, or Type 3. Type 1 means the console is effectively connected without the normal router translation, Type 2 is the ordinary working result behind a router, and Type 3 is more restricted.

PlayStation Type 2 is not a warning and should not be “fixed” into Type 1. Sony’s support documentation notes that Type 3 can block features such as Remote Play. A normal home router with Type 2 provides the balance most players want.

Nintendo Switch and Switch 2 use letters from A through F. Nintendo describes A as best for peer-to-peer communication and B as compatible with most types. C may struggle with more restrictive players, D is heavily limited, and F generally cannot establish peer-to-peer connections.

Does Strict NAT increase ping?

Not directly. NAT filtering decides whether a connection can be established. Once connected to a dedicated game server, your latency depends more on distance, routing, congestion, Wi-Fi conditions, and the game’s infrastructure.

Strict NAT can create symptoms that feel like poor performance because matchmaking takes longer or a peer-to-peer session falls back to a less ideal host. That is different from NAT adding a fixed number of milliseconds to every packet.

The distinction also matters when choosing between a managed service and self-hosting. Our comparison of Minecraft Realms and private servers explains why hosting from home introduces more network and administration requirements.

How to improve NAT type safely

1. Check the game service first. A platform outage can look like a home-network problem. Do not reconfigure the router while the service is down.
2. Restart the console and network. Shut down the console, modem, and router. Restore the modem first, then the router, then the console.
3. Remove double NAT. If an ISP gateway and a personal router both perform routing, place one in bridge or access-point mode. Two translation layers often produce Moderate or Strict results.
4. Enable UPnP. Universal Plug and Play allows supported games to request the ports they need dynamically. Update the router firmware and test again after enabling it.
5. Reserve the device’s local address. A DHCP reservation prevents a console from receiving a different address, which is important before setting manual port rules.
6. Forward only official ports when necessary. Use the port list published by the platform or game. Do not open large ranges copied from an unrelated forum.
7. Ask the ISP about CGNAT. Carrier-grade NAT means several customers share one public IPv4 address. If you cannot control the outer translation layer, the ISP may need to offer a public IPv4 address or proper IPv6 support.

Avoid the risky shortcuts

Putting a console in the router’s DMZ exposes all unsolicited inbound traffic to that device. It may improve reachability, but it should not be the first fix. UPnP, a single-router layout, and narrow port forwarding are more controlled options.

Also avoid disabling the router firewall globally. The goal is not to remove every protection. It is to give the gaming device predictable, limited paths for the connections it legitimately needs.

If NAT remains restricted after removing double NAT and checking UPnP, contact the ISP or router maker with the console’s test result. That is more productive than repeatedly reinstalling games, because NAT is a network-path issue rather than damaged game data.