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What is a Kill Switch and how does it work?

Kill switch is a technique that helps you prevent unprotected access to the internet, where your traffic doesn't go through the VPN.

There are two key differences in the Kill Switch functionality in our NordVPN applications:

  • The PC version of the Kill Switch, found in our Windows and Mac (OpenVPN version)applications, terminates the applications you specify if the VPN connection suddenly disconnects, preventing those applications from sending unprotected traffic to the internet.
  • The Mobile version of the Kill Switch, used in our iOS application, as well as the IKEv2 version of the Mac app, disables system-wide internet access if the VPN connection suddenly disconnects - that way it protects all apps, without terminating them. It will also try to reconnect you to the last server you were connected to.

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