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unel. For those who frequently change hotspot, WiFi and routers, your system is most vulnerable to DNS leaks. Indeed, the Windows operating system prefers the DNS server hosted by the LAN gateway to the DNS server hosted by the VPN service. Finally, the DNS server hosted by the LAN gateway sends all addresses to Internet service providers who disclose your online activities.
Another major cause of a DNS leak is the lack of support for IPv6 addresses in the VPN. As you know, IP4 addresses are gradually being replaced by IPv6 and the World Wide Web is still in the transition phase from IPv4 to IPv6, so if your VPN does not support IPv6, an IPv6 address request is first sent to the channel to convert IPv4 to IPv6. This address conversion will eventually bypass the VPN-safe tunnel and reveal all online activities that lead to DNS leaks.
Verifying if you are affected by DNS leaks
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Verifying DNS leaks is a fairly easy task. The following steps will lead you to a simple DNS leak test with a free online service test.
First connect your computer to the VPN.
Then visit dnsleaktest.com.
Click on Standard Test and wait for the result.
Your system loses the DNS when you see server information about your ISP. In addition, your system is affected by DNS leaks when you see lists that are not routed under the VPN service.
How to fix the DNS leak
The Windows system is vulnerable to DNS leaks and each time you connect to the Internet, DHCP settings automatically take into account DNS servers that may belong to the ISP.
To solve this problem instead of using DHCP settings, try using static DNS servers or using public DNS services or whatever is recommended by the Open NIC Project. Third-party DNS servers such as Comodo Secure DNS, OpenDNS, Cloudflare DNS, etc. are recommended if your VPN software does not have its own servers.
To change DNS settings, open the Control Panel and go to Network and Sharing Center. Navigate to Change the adapter settings on the left side and locate your network and right-click the network icon. Select Properties from the drop-down menu.
Locate Internet Protocol Version 4 in the window and click on it, then go to Properties.
Click the radio button Use the following DNS server addresses.
Enter the alternative address P related and alternative address for the DNS servers you want to use.
To use the Google Open DNS server, follow these steps
- Locate the preferred DNS server and enter 8.8.8.8.8.8.8.8.
- Find another DNS server and enter 8.8.4.4.4.4.
Click OK to save the changes.
In this context, it is advisable to use VPN monitoring software, which may increase your costs but would improve users’ privacy. It should also be mentioned that regular DNA leak testing as a precaution would pass the screening test.
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