VPN and NAT Type: Gaming Connection Explained

Almost every online game has a network screen that shows something called NAT type. It is usually one of three words: Open, Moderate or Strict. Many players see "Strict" after turning on a VPN and assume the VPN has broken their gaming connection. Others read that an "Open" label means the best experience and wonder how to get it. The truth is more modest. NAT type is a small piece of information about how easily other players can reach your device, and a VPN changes the route that information takes.

This article explains VPN and NAT type in plain language. You will see what NAT does, what the three labels mean, how a VPN changes the picture, why latency and stability usually matter more than the label, and how to test and set up a gaming connection sensibly. It also covers what we do not recommend: using a VPN to enter other regions' servers or to manipulate matchmaking, which game publishers treat as a violation of their terms.

What NAT is and why game menus show it

Your home network usually has a single public IP address from your internet provider, shared by every phone, laptop and console in the house. Inside the house each device has a private address, the kind described in the private address ranges of RFC 1918. A router sits between the two worlds and performs network address translation, or NAT. When your console sends a packet to a game server, the router rewrites the sender address to the home's public address and remembers who asked, so the reply can be handed back to the right device.

That works very well for traffic you start yourself. The difficulty appears with traffic someone else starts. If another player wants to connect to you directly, their device sends a packet to your public address, and your router has to decide which inside device should receive it. If nobody on the inside asked for it, many routers simply drop it. Games that rely on direct player-to-player links therefore need a way through, and the NAT type label summarises how hard that is.

Two other facts help later in this article.

• Many internet providers now put several homes behind one shared public address, a setup called carrier-grade NAT. The shared address space for that is described in RFC 6598. In that case there is a second layer of translation that you cannot change from your own router. The article on using a VPN with CGNAT covers that situation.
• A game server in the middle of a match, as in most modern competitive games, avoids many of these problems because both players connect to the server rather than to each other.

Open, Moderate and Strict: what the labels mean

Game platforms word this differently, but the idea is the same. The table gives a rough guide and not an official definition of any one platform.

Label	Rough meaning	Typical effect in games
Open	Incoming connections from most other players are accepted	Easiest matching with others, rarely any trouble with voice chat
Moderate	Some incoming connections work, others need help from a server	Fine for most games, an occasional lobby may fail to form
Strict	Most incoming connections are blocked	Fewer people can join you directly, voice chat or party links may fail more often

Three points often get lost.

1. The label is not a speed rating. A Strict connection can have excellent latency, and an Open connection can lag badly. The label tells you about reachability, not about how fast packets travel.
2. The label depends on the game and the platform. A test on a console, on a PC launcher and inside a specific game can report different results, because each one tests in its own way.
3. Many games hardly use it. Dedicated-server games send everything through a server. Peer-to-peer games, some fighting and party games, and some voice systems are where the label matters most.

How a VPN changes the NAT picture

When a VPN is active, your device sends its game traffic into an encrypted tunnel to a VPN server, and that server forwards it to the game. To the game and to other players, you now appear to be on the VPN server's network. Your home router's NAT is still there, but the part other players see is the VPN network.

That has several consequences.

• The label can change either way. Some VPN networks pass certain incoming connections well, and the label improves. Others sit behind shared addresses and strict rules, and the label becomes Moderate or Strict. You cannot tell in advance, and it can differ from one connection point to the next.
• Port forwarding on your router stops helping. You may have set up forwarding on your home router for a console. If the VPN is carrying the traffic, packets arrive at the VPN network and not at your router. The explanation in VPN port forwarding explained shows why that is a separate problem from the one a home router solves.
• Shared addresses are common. Many people use the same VPN server at the same time, so the public address a game sees is shared. If several accounts from one address misbehave, a game's security system may treat that address cautiously. That is not about you, but it can show up as extra checks or more failed connections.
• There is an extra hop. Traffic now goes device, VPN server, game server, and back. The tunnel adds a little work and the detour adds distance. If you want the details, read the article on whether a VPN reduces ping.

None of this makes a VPN a bad idea for gaming. It means the NAT label after you connect describes a different network from the one before.

Latency, routing and stability usually matter more

If a game feels bad, NAT type is rarely the whole story. The usual causes are these.

Distance and routing. Every kilometre of cable and every network hop adds delay. A game server that is far from you gives higher latency, and the path your provider chooses to it can be longer than expected. A VPN can sometimes make the route shorter, if your provider has a poor path to that game and the VPN network has a better one. More often it adds an extra stop. Both happen, and measuring is the only honest way to know. The background is in VPN latency explained.

Jitter and packet loss. Games send many small packets and react badly when they arrive unevenly or go missing. Wi-Fi interference and crowded evening networks cause this far more often than the VPN itself. The diagnosis steps are in how to diagnose packet loss.

Server load. A busy VPN server can slow every user connected to it. If your connection feels fine at 10 a.m. and bad at 9 p.m., load is a likely cause, not NAT.

Your own network. A phone streaming video on the same Wi-Fi, a laptop downloading updates, or a console on a weak wireless signal can ruin a match with or without a VPN.

A useful rule is to judge the connection by what you can measure: ping, jitter, packet loss, and how often you are dropped from matches. Use the NAT label only as one hint among those.

How to check your NAT type before and after

Testing in an organised way tells you much more than guessing. Follow this routine.

1. Test without the VPN first. Disconnect the VPN, restart the game or console network test, and write down the NAT type and your ping to the game's server if the game shows it.
2. Test with the VPN on. Connect the VPN, wait about ten seconds, then run the same test again. Write down the new result.
3. Change one thing at a time. Try a different connection point, a different protocol setting in the app if one exists, or a wired connection. Do not change three things and then guess which one helped.
4. Repeat at the time you really play. Evening results can differ from morning results.
5. Compare across several matches, not one. One match can be bad for reasons unrelated to your settings.

If the label gets worse with the VPN, that alone is not a reason to stop. If your matches are stable and your voice chat works, the label is only a label. If friends cannot join you or voice chat fails, see the troubleshooting ideas below.

A sensible setup checklist for gaming with a VPN

For readers who want to keep a VPN on while they play, usually for privacy on a shared network, here is a practical order of work. Setup differs by device, and the steps for consoles are in the guide on using a VPN on game consoles.

• Prefer a wired connection when you can. Ethernet removes most of the Wi-Fi jitter you would otherwise blame on the VPN.
• Pick a nearby connection point. The article on choosing a VPN server location explains why closer is normally better for latency. Choose for speed and stability, not to appear somewhere else.
• Keep the app's default settings unless you have a reason to change them, and change only one at a time.
• Close other heavy traffic. Pause downloads and video streams on the same network.
• Use split tunneling if your app offers it. You can keep the game outside the tunnel while other apps stay inside, which removes the extra hop for the game. Read what split tunneling is first, and note that some games and launchers behave differently when only part of their traffic is routed.
• Update the game, the app and the device before concluding that something is broken.
• Restart in the right order: connect the VPN, then open the game, so the game starts with the connection it will actually use.

Three everyday scenarios

A student in a dormitory. Pim plays on a laptop in a building where the network is shared by hundreds of residents. Her main concern is that other people on the network can see which services she uses. She connects the VPN for privacy, picks a nearby connection point, and notices that her game shows Moderate instead of Open. Her ping rises a little but stays stable, voice chat works, and matches complete. She leaves the VPN on, because the label did not change how the game plays.

A family console on a home router. A father sets up port forwarding on the router so his son's console gets an Open label. Later he turns on a VPN on the router for the whole house, and the label changes again. He is puzzled because the forwarding rule is still there. The reason is that the traffic now leaves through the VPN network, not through the router's own public address. He decides that for gaming he will exclude the console from the VPN, using the router's own options, and he reads the guide on VPN on a router before trying.

A traveller in a hotel. Arun plays a few casual matches in the evening on hotel Wi-Fi. The hotel network is unpredictable, with a login page and shared bandwidth. The VPN helps keep his traffic private from other guests, but matches are choppy at the busy hour. He moves the laptop closer to the access point and switches to mobile data for one match. Choppy matches here were a network problem and not a NAT problem.

What not to do: regions, bans and matchmaking

Some websites suggest using a VPN to enter a game region you do not live in, to find easier opponents, to dodge a ban, or to alter matchmaking. We do not recommend any of this. Game publishers set the rules for their services, and entering other regions' servers or changing how matchmaking sees you through a VPN generally violates those terms. Possible results include warnings, loss of progress, suspended accounts, and reduced protection of your purchases. A VPN is a tool for privacy and for stability on a poor network, not a way to get around a game's rules.

The same goes for attempts to hide from a ban. If an account is restricted, contact the publisher's support through its official channel. We also do not discuss legal topics beyond saying that a VPN does not change your responsibilities under a game's terms.

Common mistakes

• Treating Open NAT as proof of a fast connection, and Strict NAT as proof of a slow one.
• Forwarding ports on the router and expecting the rule to work while the VPN is carrying the traffic.
• Switching several settings at once, then not knowing what changed the result.
• Testing once in the morning and drawing conclusions about evening matches.
• Blaming the VPN for Wi-Fi problems that appear without it as well.
• Running the VPN on the router and on the console at the same time, which stacks two tunnels.
• Using a VPN to try to change region, which breaks the game's terms and can put the account at risk.

Summary

NAT type describes how reachable your device is from the outside, and a VPN changes that outside view because your traffic appears from the VPN network. The label may get better, worse or stay the same, and it is not a speed score. For most games, latency, jitter, packet loss, server load and your own Wi-Fi decide how the match feels. Test with and without the VPN, change one thing at a time, prefer a wired link and a nearby connection point, and never use a VPN to enter other regions' servers or to alter matchmaking.

If you want a prepaid VPN pass for a shared network or a trip, you can look at the pricing page at your own pace.