The Call of Duty MW2 beta is out this weekend on all platforms and is getting high praise for its fluid and fast gameplay. But some players are facing difficulties in finding lobbies and are facing high pings, packet loss, and even desync issues. These issues mostly occur because of a Strict or Moderate NAT type.

If you are facing these issues and aren’t sure how to set your NAT Type to Open in MW2, then worry not, as we’ll be explaining that in great detail below. Things like Windows Firewall settings, Port Forwarding, and other related settings will be covered throughout this guide.

How to Set your NAT Type to Open in Call of Duty MW2?

The first order of business would be to see what your current NAT Type in MW2 is. And to do that, you need to fire up your game and go to the Account & Network settings. Once inside, you have to click on Network Info to see the complete details about your connection.

As you can see from the image above, your NAT type is currently set to Open, which is the most ideal. Yours will either be Moderate or Restricted. Another important thing to keep in mind is that this screen will also display your local IP, so be careful not to open this while you are streaming.

Now that we’ve established that your NAT Type needs to be fixed, let’s get on with the easy fixes we have for you.

Allow MW2 Through the Firewall

We have to ensure that the Windows Firewall is not blocking any network connection requests from MW2. To do that, type “Windows Firewall” in the start menu and open Windows Firewall with Advanced Security

Then you need to do the following steps and create 2 new Inbound rules.

  • Click on Inbound Rules
  • Click on New Rule
  • Select the Rule Type; as Port
  • Click Next
  • Select TCP
  • Check the Specific Local Ports and type the following port into the box: 3074,27014-27050
  • Make sure that you save this number string in a text file as we’ll be needing it later on as well.
  • Click Next
  • Click Allow The Connection
  • Have all 3 options ticked and click Next
  • Give it any name, we suggest naming it in MW2.

And now, you need to do all of these steps again but this time select UDP.

  • Once you reach the Specific Local Ports window, type the following ports into it: 3074,3478,4379-4380,27000-27031,27036
  • Make sure that you save this number string in a text file as we’ll be needing it later on as well.
  • The rest of the steps are the same as TCP.

Now you need to head over to Outbound Rules and create the same 2 rules there as well. One for TCP, and one for UDP. You have to copy the same ports you used for each rule ( This is why we suggested copying the ports into a text file for later use)

Port Forwarding via Router

Now that we’ve allowed MW2 to connect to the internet via Firewall settings, let’s take a look at how you can use the port forwarding feature in your router to forward the MW2 ports which you copied earlier.

  • Open CMD
  • Type ipconfig and press Enter
  • You should see a bunch of IP’s on your screen now.
  • Copy your IPV4 Address and save it in the same notepad where you’ve saved all your TCP/UDP ports.
  • Copy the Default Gateway IP and paste it into your browser to open your router settings.

There are hundreds if not thousands of router types in the world which is why it is nearly impossible to cover the exact way of forwarding ports for your router in this guide. 

This is why we’ve created a general guide to help you locate the right options and perform the same steps to forward all of the ports.

  • After opening your router settings, find the Port Forwarding tab.
  • Once there, you need to paste each port in the same manner as shown in the image below. 
  • For your local IP, you will paste the IPV4 Address that you copied from the cmd window.
  • If a port is common in both TCP & UDP, then you’ll select the TCP/UDP option for them.
  • The result should be similar to the sample image we’ve attached below.

Now launch COD MW2 again and go back to the Network options to see your NAT Type. It should now be set to Open or Moderate at the very least.

You may also be interested in How To Open Your NAT Type In Warzone


Checking your Firewall and router settings to optimize the ports for MW2 should solve your NAT Type issues and set it to Open. If it still doesn’t happen, you may need to contact your internet service provider and have them set it up for you.

Wrapping Up

Your NAT type should now be open, meaning you will be able to find games and join your friend’s parties without any problems.

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