WebRTC Leak Test (VPN IP Check) Community
Questions, answers and tips from people who use the WebRTC Leak Test (VPN IP Check). Check whether your browser leaks your real IP address through WebRTC.
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This page shows only real posts from real people, so it starts empty. The guide below has the questions people most often have about the WebRTC Leak Test (VPN IP Check). Pick one to start a thread, or write your own.
From the tool guide: common questions about WebRTC Leak Test (VPN IP Check)
The items below are not posts by community members. They come from the written guide for this tool and are here to get a conversation started. Use “Ask a follow-up” to open a thread about any of them.
What is a WebRTC leak?
WebRTC exposes your public or local IP to websites, even behind a VPN or proxy.
From the tool guide Ask a follow-upHow do I fix it?
Disable WebRTC in your browser or use an extension or VPN that prevents leaks.
From the tool guide Ask a follow-upWhy does it show .local addresses?
Browsers hide your local IP behind random mDNS names for privacy. This is normal and safe.
From the tool guide Ask a follow-upDoes it work without a VPN?
Yes. Without a VPN both addresses match, which shows no additional exposure.
From the tool guide Ask a follow-upWhy are no candidates found?
WebRTC may be disabled, or your network blocks the STUN test server.
From the tool guide Ask a follow-upIs this test private?
It only contacts public STUN servers and a Cloudflare endpoint to read your normal IP.
From the tool guide Ask a follow-upWhat this tool does
WebRTC is the browser technology behind video calls. To connect you directly to other people it can ask your browser for its network addresses — and websites can ask too. If you use a VPN, WebRTC can sometimes reveal your real public IP address even though normal web traffic goes through the VPN. This is called a WebRTC leak.
How to use it, step by step
- Connect your VPN (if you use one).
- Open this page and wait about six seconds.
- Compare the “IP websites see” and “IP exposed through WebRTC”.
- If they differ, disable WebRTC or use a VPN with leak protection.
Tips from the guide
- Use a VPN app that blocks WebRTC leaks, or a browser extension that disables it.
- In Firefox, set media.peerconnection.enabled to false in about:config.
- Re-test after connecting and disconnecting the VPN.
- Test in every browser you use.
Common mistakes to avoid
- Assuming a connected VPN protects everything.
- Ignoring IPv6 addresses, which can leak even when IPv4 does not.
- Testing without the VPN connected, which shows nothing useful.
Who uses it
- VPN users. Confirm the VPN really hides your address.
- Privacy-minded browsers. See what your browser exposes.
- IT and security teams. Audit browsers and extensions for leaks.
How to ask a question people can answer
A good thread on the WebRTC Leak Test (VPN IP Check) saves everyone time. Start with a title that names the exact problem, such as the input you used, the result you expected and the result you got. A title like “Not working” is hard to answer, while a title with the specifics gets replies quickly.
- Say what you tried. List the steps you followed and any settings you changed, so replies do not repeat what you already did.
- Share a small example. A short sample input and the output you saw is worth more than a long description. Remove anything private first.
- Mention your setup. Your device, browser and whether you are on a phone or a computer can explain many odd results.
- One question per thread. Separate topics get clearer answers and are easier to find later with the search box above.
- Come back and reply. If a suggestion worked, say so and upvote it, and if you found the fix yourself, post it for the next person.
Community rules
Be kind, stay on topic and keep personal data out of your posts. Do not post adult, hateful or illegal content, advertising or repeated links. Every post is shown with its author’s username and date, and posts that break these rules can be hidden by moderators. This space is for help with the WebRTC Leak Test (VPN IP Check) and related tasks, and it is separate from the sitewide discussion forum where broader topics live.