What Is NAT Type? Meaning, Types, and Gaming Impact
Understand what NAT type means, how open, restricted, port restricted, and symmetric NAT differ, and why it matters for gaming and peer-to-peer connections.
NAT type is a practical label for how your router or network allows inbound connection attempts after your device starts an outbound connection. It is most visible in games, voice chat, video calls, and peer-to-peer apps that need two users to reach each other directly.
The exact words vary by platform. One device may say Open, Moderate, or Strict. Another may say Type 1, Type 2, Type 3, A, B, D, or F. The useful question is the same: how restrictive is the path between your device and other players or peers?
Quick Answer
NAT type describes the behavior of the NAT and firewall in front of your device. A more open NAT lets more outside peers send traffic back to you after a session is created. A more restrictive NAT only accepts traffic from narrower address and port combinations, which can make matchmaking, party chat, hosting, and direct P2P connections harder.
NAT vs NAT Type
NAT, or Network Address Translation, lets private devices such as phones, consoles, and PCs share a public internet address. Your device may use a private address like 192.168.1.20, while websites see the public IPv4 address assigned to your router or ISP.
NAT type is not the same as that public IP address. It is a behavior result. It depends on how mappings are created, whether inbound responses are accepted, whether ports stay stable, and whether another NAT layer exists upstream.
Common NAT Types
| NAT type | What it means | Typical impact |
|---|---|---|
| Open Internet / Full Cone | After your device creates a mapping, outside hosts can usually send traffic back through that mapping with few restrictions. | Usually best for hosting, party chat, and direct player-to-player connections. |
| Restricted NAT | Incoming traffic is limited to external IP addresses your device has already contacted. | Most apps work, but some peers may need relay servers or extra negotiation. |
| Port Restricted NAT | Incoming traffic must match both the external IP address and port your device contacted. | More restrictive for P2P. Some games may show Moderate or limited connectivity. |
| Symmetric NAT | Each outbound destination can receive a different external mapping, and unrelated inbound attempts are blocked. | Often treated as Strict because direct P2P connections are difficult without relay support. |
What Determines NAT Type?
NAT type is shaped by the full path between your device and the public internet, not only by one setting in one router.
Router NAT behavior
Routers differ in how they reuse ports, how long mappings stay open, and which return packets they accept.
UPnP or port forwarding
Automatic UPnP rules or manual port forwarding can make a device reachable for a specific game or service.
Double NAT
Two routers in the same home can each translate traffic, making inbound rules harder to manage.
CGNAT
An ISP can place customers behind carrier-grade NAT, so your home router does not hold a normal public IPv4 address.
Firewall and security policy
Router, OS, VPN, hotspot, or ISP filtering can block traffic even when address translation itself looks normal.
Does NAT Type Affect Gaming?
NAT type usually does not change raw download speed or the ping to a normal game server by itself. A strict NAT can still have fast bandwidth. The problem appears when the game needs direct connections between players, voice chat peers, party members, or a player-hosted lobby.
When direct P2P fails, the game or app may use relay servers. Relays keep the session working, but they can add latency, reduce reliability, or prevent hosting features. That is why an Open NAT is usually the best NAT type for gaming, while Symmetric or Strict NAT creates the most compatibility problems.
Check Your Current NAT Behavior
Run the NAT test from the same network you use for gaming or hosting. The result shows the observed IPv4 NAT behavior and helps decide whether to check router settings, double NAT, or CGNAT next.
Check NAT Type Now →FAQ
What NAT type is best for gaming?
Open Internet or Full Cone is usually best because it creates the fewest barriers for direct connections. Restricted or Port Restricted can still work well in many games. Symmetric NAT is usually the hardest for P2P games and voice chat.
Does NAT type affect ping?
Not directly in every case. NAT type mainly affects whether peers can connect directly. Ping can get worse when the app must use a relay path or keeps retrying connection negotiation.
What is a NAT test or NAT status?
A NAT test observes how your current network behaves from the outside. NAT status is the label shown by a device, console, game, or checker after that test.
What do Type 1, Type 2, Type 3, or Type A/B mean?
Those are platform-specific labels. PlayStation, Xbox, Nintendo Switch, and PC tools name results differently, but they are all describing how easy it is for outside peers to reach your device.