Every user who has already dealt with VPNs and their functions has certainly heard of the so-called VPN kill switch technology. We have written about the kill switch feature in our reviews and articles about VPNs and we have often highlighted it. The reason for this is simple: When you use a VPN, you appreciate the reliability of surfing the Internet privately and anonymously. Thanks to a VPN, your own online activities cannot be traced once you have connected to a VPN server. But what happens when the server has been compressed? Or does the server even crash?
If this happens, there is a risk that you will continue to surf the Internet with the normal Internet connection and reveal your IP address in the process. In order to remain anonymous and, above all, secure, many VPN providers value the Kill Switch technology. But what exactly does Kill Switch? How does it work? a kill switch? Which VPN service does this technology offer? Questions and questions that we will deal with in this article.
What does VPN mean?
A VPN is a virtual, private network through which your entire internet connection is encrypted. This will make your IP address veiled, your data will be not recorded and you can surf the internet securely, privately and anonymously. If you want to read more about VPNs and their functions, click here here.
Wie zuverlässig ist ein VPN?
The reliability of a VPN depends on the provider you use. As a rule, one should keep in mind that paid Provider by far more reliable and secure are, as a free provider. This is mainly due to the fact that paid providers offer more servers, more security and more functions. In our tests, these VPN providers in particular turned out to be very good Reliable and for sure highlighted:
Reasons for connection interruptions
In the unlikely event that the connection breaks down completely, the kill switch comes into play. But what are the reasons why a VPN connection breaks down?
- Server is compressed
It can happen with popular VPN providers that unauthorized persons and hackers try to crack the server in order to gain access to the data. Most VPN providers, however, offer very reliable AES 256-bit encryption on a military basis.
- Unstable VPN protocol
Generally one can say that the best protocol is OpenVPN with TCP and UDP connections. However, it can happen that TCP is more stable than UDP and can break your connection. Less secure protocols such as PTPP or L2TP also tend to break off more frequently. However, a good VPN service will automatically choose the best protocol for you.
- Network congestion
If you connect to a VPN server, it can happen that this server is currently being used by several users at the same time and is therefore overloaded. With VPN providers like NordVPN or CyberGhost This happens less often due to the enormous number of servers, but it can still happen. The distance between the servers also plays a role: the further away the server is, the weaker the signal. This increases the risk of your VPN connection breaking off.
- Various settings (firewall, router, computer, etc.)
Your settings for the firewall, your router, your computer or your anti-virus software can affect your VPN connection. If you find that your VPN connection drops frequently, you should try to turn off your programs one by one to see which program is causing the connection drops.
What is a kill switch?
A kill switch is a technology that is now standard for most VPN providers. Said in German is that Kill Switch a Emergency switch. And that is exactly its function. A VPN kill switch continuously monitors your connection to a VPN server. However, if this connection should ever break, a kill switch will cut off your entire Internet connection. This means that your connection to the Internet is shut down for the time being so that your data, such as your IP address, does not fall into the wrong hands. The kill switch is like a protective wall for your defense system. It just protects your data from accidental disclosure.
With this technology, your internet connection remains interrupted until you have reconnected to a VPN server or you deactivate the kill switch. However, we do not recommend deactivating a kill switch, it should always be activated, since it does not affect your connection quality or other Internet settings.
Why is a kill switch so important for a VPN?
Most internet users use a VPN for security and privacy reasons. This is precisely why it is so important to always be protected and anonymous on the Internet. However, if the VPN connection should break for whatever reason, you are still online - only with your true IP address. In such a case, your data will be passed on and disclosed. This is of course just for Advertisers and Marketing agencies a found food. To prevent this, most large VPN providers have included a kill switch to prevent this from happening.
With the help of a VPN kill switch, your data will always be protected, even if your VPN connection should break down. The kill switch will cut your entire internet connection. Some VPN providers also give you the option to set up the kill switch for certain programs. In general, however, we recommend using the kill switch for your entire internet connection always activated to have.
VPN Kill Switch: How Does This Technology Work?
With some providers, the kill switch is activated from the start and, in our opinion, should not be deactivated. With some providers, such as NordVPN, you can set up the kill switch for individual programs. In principle, the kill switch has four important tasks: Observe, Detect, To block and Restore. Explained in detail:
The kill switch continuously monitors your connection to a VPN server. He looks for changes in the status or the IP address. However, this does not affect your internet connection and does not affect the performance or the speed of your connection.
If your connection to the VPN server should break, the kill switch will recognize this immediately.
- To block
As soon as the Kill Switch detects that your connection to a VPN server has been interrupted, it cancels your entire Internet connection (or the connection of individual programs, depending on which VPN service you are using and how you have configured the Kill Switch).
The kill switch remains up until a connection to a VPN server is re-established. This ensures that your data is always protected.
VPN kill switch: which providers are the best?
There are numerous VPN providers who now offer the kill switch method and are already installed by default. We have tested the best VPNs for you.
VPN kill switch: conclusion
In our test, NordVPN clearly scored first with its features and above all its intelligent kill switch. The enormous selection of servers also helps to have a constant and interrupted Internet connection. However, if this should stop for certain reasons, the kill switch reacts immediately. The other providers were also able to convince us with the kill switch, whereby Hide my Ass has often led to failures. This is mainly due to the smaller selection of servers and the resulting server overload. But their kill switch also worked perfectly. All in all, all of the vendors we tested are very good at the Kill Switch goes. However, we clearly recommend NordVPN. Depending on your needs, you can safely opt for a different VPN service.
Does a kill switch always work?
In our test, each of the providers we tested was able to convince with its kill switch method. We could also configure the kill switch and activate or deactivate it manually.
Why isn't there a kill switch with free VPNs?
Free VPNs often don't have the same functionality as paid VPNs. They also do not have the capacity to implement certain functions. Bandwidth and servers are also limited with free providers, so the expansion would not be worthwhile for these providers in terms of price.
Is it legal to use a VPN? If so, why do you need a kill switch?
Using a VPN is completely legal. The main purpose of the kill switch is to keep your data secret if a VPN connection is broken. After all, you want to use a VPN to surf the Internet safely and anonymously. If the connection breaks down, your entire internet connection will be lost.