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VPN leaks: Meaning and how to fix it

01.07.2024
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Are you sure your VPN is truly protecting your online activities? VPN leaks can undermine your privacy, exposing your IP address, DNS requests, and even your browsing activity to your ISP and other prying eyes. In this guide, we'll delve into what VPN leaks are, how to test for them, and most importantly, how to fix them.

What are VPN leaks?

VPN serves as a secure tunnel that hides your real IP address and encrypts your web traffic, routing it through a remote server. VPN leaks occur when this tunnel fails to do its job, allowing your real IP address, DNS requests, or other identifying information to slip out to third parties.

There are several types of VPN leaks, including:

  • IP address leaks: Your real IP address is revealed instead of being masked by your VPN.
  • DNS leaks: Your DNS requests are sent to your ISP's DNS servers instead of your VPN's private DNS servers.
  • WebRTC leaks: Websites can exploit WebRTC technology to discover your true IP address even when you're connected to a VPN.
  • HTML5 geolocation leaks: Techniques like HTML5 geolocation can pinpoint your location regardless of your VPN use.

How to test for VPN leaks

The first step is to test your VPN for leaks. You can use online tools like our VPN leak testing tool or conduct manual tests using tools like "What Is My IP" before and after connecting to a VPN server. Look for changes in your IP address and DNS server.

How to check for IP leaks

  • Start by disconnecting your VPN and searching "What is my IP address" on Google. Note down your real IP address.
  • Log into your VPN account and connect to a server of your choice. Confirm that you're connected securely.
  • Verify your IP change by searching "What is my IP address" again on Google. Your IP should now match the VPN server's IP and the country you selected.

You can use reputable online tools that specialise in IP leak tests. These tools also check for DNS leaks, dropped connections, and other vulnerabilities.

Must read: What is emergency VPN disconnect.

Fixing IP address leaks

If your VPN is leaking your IP address, here's what you can do:

  • Disconnect and reconnect to your VPN.
  • Ensure your web browser isn't bypassing the VPN.
  • Look for IPv6 leak protection in your VPN settings.
  • Disable IPv6 on your device if necessary.

Fixing DNS leaks

To fix DNS leaks:

  • Change your device's DNS settings to use your VPN's DNS servers.
  • Ensure your VPN offers robust DNS leak protection.
  • Switch to a VPN service that maintains its own zero-log DNS servers.

Fixing WebRTC leaks

WebRTC leaks are typically browser-based issues. Here's how to tackle them:

  • Enable WebRTC blocking features in your VPN browser extensions.
  • Disable WebRTC in your browser settings manually.

Preventing future leaks

  • Enable IP-binding or firewall settings to block non-VPN traffic.
  • Consider investing in VPN monitoring software for real-time network inspection.
  • Choose a VPN with IPv6 compatibility, DNS and WebRTC leak protection, and a reliable kill switch.

Also read: What to look for when buying a VPN.

In summary, protecting your online privacy requires more than just using a VPN. Regularly test for leaks, fix any identified issues promptly, and choose a reputable VPN service provider to ensure your data remains secure and private.