Your IP: 42.114.251.66 · ISP: FPT Telecom · Your Status: Unprotected

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What Is a DNS Leak?

A DNS leak is a security flaw that occurs when requests are sent to an ISP's DNS servers even when a VPN is being used to protect users. A VPN is designed to encrypt a user’s Internet connection to keep their traffic in a private tunnel that hides all of their browsing activity. That means all the user’s Internet searches and website visits are hidden from everyone except for their VPN provider.

A DNS leak occurs when the user’s DNS requests move outside the encrypted tunnel and become visible to their ISP. As a result, all their browsing activity, including their IP address, location, and web searches, goes through the ISP in the same way it would if they were not using a VPN. DNS leaks are a major privacy threat since the anonymous network may be providing a false sense of security while private data is leaking. It also opens the door for DNS poisoning which can be used for phishing attacks.

What Is DNS?

The Domain Name System (DNS) is an Internet protocol that is in charge of translating website addresses into codes so they can be read by computers. This is crucial to helping Internet users visit their favorite websites, access search engines, use social media, and watch streaming services.

The DNS translates a web address into an Internet Protocol (IP) address, which enables computers to recognize the location a user wants to access and helps devices communicate with each other. Web browsers use DNS servers to discover the IP address that users search for and enable people to get a more user-friendly experience on the Internet.

 

How Can I Check If My VPN Is Protecting Me?

If SysVPN is configured correctly, it can shield you against DNS leaks. You may verify that SysVPN is functioning properly with the use of this page's DNS Leak Test.

How Does SysVPN Prevent DNS Leaks?

DNS requests are sent from your device whenever it connects to the Internet. On the other hand, if you are using SysVPN, our applications will obstruct any DNS requests sent from your device and instead reroute them via a secure and encrypted tunnel. Your privacy will be intact even if we do not keep any logs. You will get the following primary benefits:

  • DNS servers that are much faster than the standard ones.
  • No logs of activities or connections.
  • End-to-end encryption of all traffic passing between your devices and DNS servers.
  • Drastic decline in the risks of suffering a DNS leak.

What Causes VPNs To Leak DNS?

The main cause of VPN DNS leaking is the improper manual configuration of the VPN service on a device or operating system. That’s why you should always choose a VPN provider that offers cross-platform – at least compatible with the most popular devices and operating systems.

Other factors that contribute to the risk of dealing with a VPN DNS leak include:

  • Built-in OS features that might interfere with your DNS requests and traffic.
  • Whether or not you manually configured your DNS in such a way that it’s told not to use the DNS servers operated by your VPN provider.
  • Improper configuration of the network settings.
  • The fact that you’re using both IPv4 and IPv6 while running a VPN with no IPv6 support.

Another more dangerous cause of a DNS leak can be the fact that a cybercriminal has taken control of your router. When that happens, your device is tricked into sending DNS traffic outside the VPN traffic.

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