Every visit you make in your browser may leave traces behind, and in some cases, your real IP address could already be exposed without you even noticing.
One of the most common and easily overlooked issues is WebRTC leaks. Many people use different WebRTC leak detection tools to perform basic security checks.
Next, let’s walk through how to use a WebRTC leak detection tool for testing, and how to perform a basic browser fingerprint check at the same time to fully inspect your IP security.

WebRTC is a browser-based real-time communication technology. If you are using a proxy but WebRTC exposes your real IP address under certain conditions, this is known as a “WebRTC leak.”
Common risks include:
• Your real IP address is still exposed even when a proxy is enabled
• Your actual network location can still be identified after using a proxy
• Certain platforms can bypass proxies and obtain your local IP
• Private browsing mode is not always secure
Therefore, running an IP security check is very necessary, especially for:
Users who frequently access overseas websites with proxies, cross-border e-commerce operators, privacy-conscious users, and people working on public WiFi networks.
There are many online tools available today. Platforms like ToDetect integrate WebRTC detection, IP checks, and browser fingerprint analysis into one easy-to-use solution.
Open the ToDetect website in your browser, then look for:
• WebRTC Leak Detection
• IP Address Detection
• DNS Leak Detection
You can usually find these options directly on the homepage.
After clicking the detection button, the tool will automatically read your browser’s WebRTC configuration, attempt to retrieve your local IP and public IP, compare whether the proxy IP matches, and determine if there is an IP leak risk.
Once the test is complete, you may see results such as:
✔ No leaks detected (relatively safe)
⚠ Local IP exposure detected
❌ Potential WebRTC leak risk detected
If you see “Local IP exposure detected,” it means your browser may have a leak issue that requires further action.
Many people only focus on IP addresses while overlooking the more hidden issue of browser fingerprinting.
• Browser fingerprints include: User-Agent information, screen resolution, plugin information, font lists, time zone, and language settings.
• When combined, this information can uniquely identify you, even if your IP address changes.
That’s why it’s recommended to review fingerprint risks together with WebRTC leak tests for more complete results.
| Risk Type | Description | Severity | Easy to Overlook? | Recommended Solution |
|---|---|---|---|---|
| WebRTC Local IP Leak | Local network IP exposed even with a proxy enabled | Medium-High | Easy to overlook | Disable WebRTC or use anti-leak extensions |
| DNS Request Leak | DNS requests still routed through local ISP | High | Easy to overlook | Enable proxy DNS or secure DNS |
| IPv6 Leak | IPv6 traffic bypasses the proxy connection | High | Relatively easy to overlook | Disable IPv6 or use full proxy support |
| Browser Fingerprint Too Unique | Multiple websites identify the same device | Medium | Very easy to overlook | Use fingerprint obfuscation or private browsing mode |
| Incomplete Proxy Configuration | Some traffic bypasses the proxy | Medium-High | Easy to overlook | Check global proxy settings or enable global proxy mode |
If the test results show risks, you can try the following four solutions.
Taking Chrome as an example, you can limit WebRTC access to local IP addresses through extensions or browser settings. Install privacy-focused extensions or disable related functions through browser policies.
Not all proxy services can prevent WebRTC leaks. Choose providers that support IPv6 protection, WebRTC leak prevention, and DNS leak protection.
Some privacy-focused browsers already include built-in protections, making them safer than standard browsers.
It’s recommended to develop the habit of running IP security checks regularly.
Especially after changing network environments, switching proxy nodes, or before visiting sensitive websites.
More and more websites now use “multi-dimensional identification” technology, also known as browser fingerprinting. Simply hiding your IP address is no longer enough.
If your screen resolution stays fixed, your font combinations are unique, your plugins remain unchanged, and your time zone and language settings rarely change, systems can still identify you.
True privacy protection should be: IP masking + fingerprint obfuscation + WebRTC leak prevention = relatively safer browsing.
Tools like ToDetect are not only for WebRTC leak detection. They can also:
• Check whether your real IP is exposed
• Analyze browser fingerprint risks
• Test whether your proxy is working properly
• Provide an overall privacy score
• Serve as a one-stop privacy testing dashboard for users
Especially for cross-border business operations or social media account management, running a detection check beforehand can help avoid unnecessary account risks.
If you frequently switch networks, use proxy nodes, or access overseas services, treat IP security checks as a regular habit rather than a one-time task.
The value of tools like ToDetect lies in turning complex network security testing into something ordinary users can complete within minutes.
Ultimately, privacy protection is not something you do once and forget about. It’s an ongoing process of optimization. Every extra check you perform reduces the possibility of risk exposure.