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Port forwarding and Mullvad


(If you already have added ports or use the website to add ports then skip to step 5)


Step 1:  Click on Settings in the Mullvad client


Step #2 Click on Manage


Step #3 Click on Add to add a port.


Step 4: After having added the port 5410 in this example, then click on the X in the top right corner to close the window, and then reconnect to Mullvad.


Step #5 Open a browser and go to Https:// and click on Download iPerf binaries.


Step #6 Right-click on the file that matches your Operating system, in this example we use the 64bit one and then select Save Link as...


Step #7 Click on the Downloaded file


Step #8 Select the directory and then right-click and select Copy


Step #9 In explorer click on Downloads and then right-click and select Paste



Step #10 Right-click Start and then click on Run or click on Windows Key + R,  and after that type cmd and then OK


Step #11 In the command prompt. write the follwing.

  1. cd Downloads
  2. cd iperf<TAB>
  3. iperf3.exe -s -p 5410
    Replace 5410 with the port that you have been assigned.


Step #12 On the Windows Firewall, click on Allow access, if you have a third party firewall please make sure it is not restricting.


Step 13 : Open and then enter the port number you are running iperf on and then click on Check Port

If everything is working then you should see the Success: I can see your service on ...





To test your port forwarding, in this example we will use 5555 as the one assigned by Mullvad, you should replace 5555 with the port you were assigned.

  1. Add the ports from either the Mullvad client on from our website.
  2. In a terminal issue netcat -l -p 5555
  3. Make sure you have curl, if not, install curl
  4. In another terminal issue: curl

The result will show "reachable: true" if it is working as it should.







  1. Make sure that you reconnect after adding a port.
  2. If you are using multiple devices sharing the same account and connecting to the same server, then only the last connected device will get the ports forwarded to it.
  3. Make sure that you don't have a third party firewall that might be blocking.