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WebRTC Leak Test

Check whether browser WebRTC behavior can expose your real IP while using a VPN

What can reveal

WebRTC may expose local or network IP information through requests, depending on browser behavior and VPN setup. This can happen even when your main public IP appears changed.

How to run a WebRTC leak test

  1. Capture baseline IP/ISP details on the homepage checker.
  2. Connect your VPN, then repeat the same checks.
  3. Compare browser-level behavior with Proxy Check and DNS Leak Test.
  4. If browser-originated IP signals still differ, apply WebRTC fixes below and retest.

Related tests

How to fix WebRTC leaks (Chrome and Firefox)

  • Chrome / Edge: Prefer a trusted extension or browser policy that limits non-proxied UDP/WebRTC local IP exposure, then retest.
  • Firefox: Review WebRTC settings in about:config (for example media.peerconnection.enabled) and validate again.
  • VPN settings: Keep kill switch and leak protection enabled, and avoid conflicting browser proxy rules.

Browser behavior changes over time, so periodic re-testing is recommended after browser or extension updates.

Privacy hardening

Protect your IP

What to do next after a WebRTC leak test

Use DNS, proxy, and IP checks to confirm your VPN setup is consistent across leak vectors.

1Next step
Resolver path

Run a DNS leak test

WebRTC and DNS leaks are separate problems. Validate resolver traffic before trusting your VPN setup.

Check DNS leaks
2Next step
IPv6 path

Run an IPv6 leak test

Some VPNs route IPv4 correctly but still expose your normal IPv6 path. Validate that separately.

Check IPv6 leaks
3Next step
Guided flow

Use the VPN verification wizard

Record pass/warn/fail results in one guided workflow and keep the checklist for future retesting.

Open wizard
4Next step
Context

Compare proxy/VPN signals

Proxy checks help interpret whether your IP context looks like a shared gateway, VPN, or hosting network.

Run proxy check
5Next step
Troubleshooting

Fix VPN connected but IP not changing

If your browser still shows the wrong IP, review common causes like split tunneling or app routing issues.

Read fixes

Related Articles

How to Protect Your IP Address from Tracking12 min read • November 4, 2025VPN vs Proxy: Privacy, Speed, and Which to Use14 min read • December 1, 2025VPN Connected but IP Not Changing? How to Fix It8 min read • February 9, 2026What is a VPN and How Does it Work?9 min read • November 9, 2025

Frequently asked questions

What is a WebRTC leak?
A WebRTC leak is when browser WebRTC/STUN behavior exposes IP-related information outside your expected VPN route.
Can WebRTC leak even if my VPN is connected?
Yes. Browser-level behavior can still expose network details if WebRTC settings are not constrained.
How do I prevent WebRTC leaks in Chrome?
Use trusted privacy controls/extensions and limit non-proxied WebRTC UDP behavior where supported, then retest.
How do I prevent WebRTC leaks in Firefox?
Review and harden WebRTC configuration in about:config, then validate with repeated checks.
Should I run DNS and WebRTC leak tests together?
Yes. DNS and WebRTC are different leak vectors, so both should be tested for reliable VPN verification.