DNS leaks explained | Learn how to check and fix DNS leaks!

Опубликовано: 06 Октябрь 2024
на канале: VPNpro

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On this channel, we talk about DNS leaks whenever a VPN is brought up. But if you don’t really know what those are, I’m about to have DNS leaks explained. I will tell you everything there is to know about DNS leaks and show you how to see if you have DNS leaks. Plus, I will teach you how to fix those!

=== What is DNS? ===

DNS stands for Domain Name System, and it’s a system that matches domain names with corresponding IP addresses. Take our website for example. By typing “vpnpro.com” you will invoke a DNS server that will request a unique IP address associated with this name.

Browsing without a VPN, would make all your requests pass through ISP-owned DNS servers, unless you configure your router to work with a different DNS, which is not that easy. At the end of the day, this basically means that your ISP knows every website you visit. With a VPN though, since your requests are rerouted through a VPN server, your ISP will not get any such information.

=== What are DNS leaks? ===

At least that’s how it’s supposed to work, but sometimes DNS leaks can occur. When your system reverts to the default ISP DNS servers despite the fact you are using a VPN - that’s right here is DNS leaks explained.

This usually happens when your VPN is configured wrong, or when the service itself is unreliable. In rare instances, a VPN you are using may not have its own DNS servers at all. All those cases cause your connection to leak outside of the secure VPN tunnel, exposing all your private data.

This is why most reputable VPNs made it their goal to include DNS leak protection. For instance, NordVPN can prevent any unencrypted queries going outside its VPN tunnel. Next, you have to know how to check for DNS leaks.

=== How to check for DNS leaks ===

Answering the “Is my DNS leaking?” question is fairly simple. Some VPN providers even have tools made specifically to check for DNS leaks. For instance, Surfshark’s DNS leaks test is really good if you are using this VPN. But if not, it will show leaks all the time, so it’s not my top choice.

Instead, I prefer to do a DNS leak check with websites like IPleak.net or DNSleaktest.com. They both are almost identical: just run the DNS leaks test and check if you are still getting your original IP even when using a VPN.

So first, check your original IP using one of those websites. Then connect to a different server using your VPN and test VPN connection with the same website. If the IP and location are completely different from your original ones - all is good. If not, you have a DNS leak at hand.

=== How to solve DNS leaks? ===

Well, fixing DNS leaks is usually not a clear case. Sometimes, simply reconnecting or choosing a different VPN server will do the trick. Other times, you will need to clean your cache and browser cookies - as they can keep information about your previous connection. But in both those cases, using a reliable VPN provider with a strong security focus is the way to reduce the frequency of DNS leaks.

\\TIMESTAMPS//
0:00 Intro
0:21 What is DNS?
1:14 What are DNS leaks?
2:05 How to check for DNS leaks?
3:36 Conclusion

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