VPN & Privacy Leak Tester

Comprehensive security analysis to detect IP, DNS, WebRTC, and IPv6 leaks that could expose your real identity.

IP Check

DNS Leak

WebRTC

IPv6

Results

Comprehensive test takes about 10 seconds

Understanding VPN Leaks & Privacy

Even with a VPN enabled, various vulnerabilities can expose your real identity. Learn about each leak type and how to protect yourself.

An IP leak occurs when your real IP address is exposed despite using a VPN. This can happen due to:

VPN connection drops: If your VPN disconnects momentarily, unprotected traffic may pass through your real connection
Split tunneling misconfiguration: Some apps may be configured to bypass the VPN tunnel
Kill switch disabled: Without a kill switch, your device continues connecting when VPN fails

Tip: Always enable "Kill Switch" in your VPN settings to block internet access if the VPN disconnects.

DNS (Domain Name System) translates website names into IP addresses. A DNS leak occurs when these queries bypass your VPN:

What's exposed: Your ISP can see every website you visit, even if the content is encrypted
Common cause: Windows "Smart Multi-Homed Name Resolution" can query multiple DNS servers
Detection: If your ISP's DNS servers appear instead of your VPN's, you have a DNS leak

Tip: Enable "DNS Leak Protection" in your VPN and consider using custom DNS servers like 1.1.1.1 or 9.9.9.9.

WebRTC (Web Real-Time Communication) enables browser-to-browser communication for video calls, but can leak your real IP:

How it works: WebRTC uses STUN servers to discover your public IP, bypassing VPN tunnels
Affected browsers: Chrome, Firefox, Opera, and Edge all support WebRTC by default
What's exposed: Both your public IP and local network IP (e.g., 192.168.x.x)

Tip: Use browser extensions like "WebRTC Leak Shield" or disable WebRTC in about:config (Firefox) or chrome://flags.

Many VPNs only tunnel IPv4 traffic, leaving IPv6 connections unprotected:

The problem: If your ISP supports IPv6, websites may receive your real IPv6 address
Why it happens: Older VPN software may not support IPv6 tunneling
Growing risk: IPv6 adoption is increasing globally, making this leak more common

Tip: Enable "IPv6 Leak Protection" in your VPN, or disable IPv6 on your network adapter if not needed.

Enable Kill Switch

Blocks all internet traffic if VPN disconnects, preventing accidental exposure.

Use VPN's DNS Servers

Configure your system to use your VPN provider's DNS to prevent DNS leaks.

Disable WebRTC

Use browser extensions or settings to disable WebRTC functionality.

Block IPv6

Enable IPv6 leak protection in VPN or disable IPv6 on your network adapter.

Update VPN Software

Keep your VPN client updated to benefit from the latest security patches.

Choose a Reliable VPN

Use reputable VPN providers with proven no-logs policies and leak protection.