What is a Browser-Based Firewall Test?
It is an online tool that tests your network's security from the outside in—the same way a website would see you. It checks for common configuration errors and vulnerabilities that could expose you to risks, especially on public WiFi.
How It Works & Its Limitations
For security reasons, a website cannot directly scan your computer or router. Our Firewall Test intelligently works within these limitations. It checks your public IP and location, and uses WebRTC technology to probe for IP leaks that can bypass VPNs. It also tests for outbound vulnerabilities by attempting to connect to common ports from your browser.
For a true inbound port scan, an external service is required. Our tool guides you to a trusted third-party scanner to complete this check safely. By combining these tests, we calculate a **Security Score** and provide clear, actionable advice to help you secure your digital perimeter.
Why Choose Our Firewall Test?
Clear Security Score
We simplify complex security checks into a single, easy-to-understand score, so you know instantly if you're at risk.
Focus on Real-World Risks
Our tests target the most common and critical vulnerabilities for everyday users, such as IP leaks and insecure public WiFi connections.
Actionable, Simple Advice
Instead of technical jargon, we provide clear recommendations that anyone can follow to improve their network security.
Safe and Private
Our tool never asks for permissions or installs software. All possible tests run securely within your browser.
Your Firewall Security Analysis
Testing your connection for public vulnerabilities...
Your Security Score
Detailed Test Results
Actionable Recommendations
How to Test Your Firewall
Follow these steps to understand your network's security and how to improve it.
Analyze Your Security Score
The tool runs automatically when you load the page. Your Security Score provides an immediate overview of your risk level. A high score (green) is excellent, while a low score (red) indicates serious vulnerabilities.
Review Detailed Test Results
Look through each card. Pay special attention to the **Inbound Port Scan** and **WebRTC IP Leak** tests. The port scan requires you to click the button to perform the external test, which is a crucial step for a complete picture.
Follow Recommendations to Secure Up
If your score is low, the tool will provide clear, actionable recommendations. Following these steps, like using a trustworthy VPN, is the most effective way to fix the detected issues. Refresh the page after making changes to see your new, improved security score.
Quick Tips for Better Firewall Security
Always Use a VPN on Public WiFi
This is the single most important step. A VPN encrypts your connection, hiding your activity from others on the same network and securing your data.
Keep Router Firmware Updated
Your router is your primary firewall. Manufacturers release security patches to fix vulnerabilities, so ensure your firmware is always up to date.
Use a Strong WiFi Password
Ensure your home WiFi uses WPA2 or WPA3 encryption with a strong, unique password to prevent unauthorized access to your network.
Ready to Secure Your Connection?
Get an instant security score and find out if your digital door is locked. It's fast, free, and completely private.
Understanding Your Results
Each test checks a different aspect of your network's security. Here’s a detailed breakdown of what each result means.
Inbound Port Scan
What is it? This test checks for open "digital doors" (ports) on your network that are visible to the entire internet. Services like websites, file servers, or remote desktop access listen on these ports for incoming connections.
Why is it important? Every open port is a potential entry point for an attacker. Hackers constantly scan the internet for open ports, looking for vulnerable services to exploit. A secure firewall should make your ports "stealthed"—completely invisible and unresponsive to scans. You should only have ports open if you are intentionally running a service and have secured it properly.
Outbound Port Test
What is it? This test checks if your computer is allowed to make outgoing connections on common but often unnecessary ports (like FTP for file transfers or SMTP for sending email directly).
Why is it important? If malware infects your computer, it will try to "phone home" to its command-and-control server to send stolen data or receive new instructions. By blocking unneeded outbound ports, a well-configured firewall can trap this malicious traffic, preventing the malware from communicating and effectively neutralizing the threat.
WebRTC IP Leak
What is it? A test for a common browser vulnerability (in the Web Real-Time Communication protocol) that can reveal your real, private IP address even when you are connected to a VPN.
Why is it important? This is one of the most critical tests for VPN users. A WebRTC leak completely undermines your VPN's purpose by allowing any website to bypass the VPN tunnel and discover your true location and identity. A secure connection should show no leaks.
DNS Security
What is it? An analysis of your Domain Name System (DNS) provider—the service your computer uses to translate website names (like `google.com`) into IP addresses.
Why is it important? By default, your Internet Service Provider (ISP) handles your DNS requests, which means they can log every website you visit. Switching to a private, secure DNS provider (like Cloudflare's 1.1.1.1) encrypts this traffic and prevents your ISP from snooping on your browsing history, adding a crucial layer of privacy.
Secure Connection (HTTPS)
What is it? A check to ensure your connection to this website is encrypted using HTTPS.
Why is it important? An unencrypted (HTTP) connection means your data is sent in plain text. Anyone on the same network—especially on public WiFi—could intercept and read it. The padlock icon and HTTPS mean your data is scrambled and safe from eavesdroppers, which is essential for any online activity, especially logging in or making purchases.
Firewall Test Applications
This tool is a must-have for ensuring your digital safety in a variety of common situations.
Checking Public WiFi Safety
Before you log in to your bank or email at a café, airport, or hotel, run this test. It will instantly tell you how exposed your connection is and whether you should enable a VPN before proceeding.
Verifying Your VPN is Working Correctly
A VPN is only effective if it's configured properly. This tool acts as an independent verifier. Use it to confirm that your public IP has changed and, most importantly, that you don't have a WebRTC leak defeating the purpose of your VPN.
Basic Home Network Audit
Get a quick snapshot of what a visitor to your website would see from your home network. Understanding your DNS provider and public IP helps you make more informed decisions about your home internet privacy.
Who Can Benefit?
Travelers & Remote Workers
Anyone who frequently connects to public or untrusted WiFi networks needs a quick way to assess their risk.
VPN Users
Essential for verifying that your VPN is actually protecting you and not leaking your real IP address through other means.
Everyday Users
Provides simple, understandable feedback on your connection's safety, helping you make smarter choices online.
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Frequently Asked Questions
Get instant answers to common questions about our Firewall Security Test.
Can this tool see my WiFi password or other devices on my network?
Absolutely not. This tool runs entirely in your browser and has no access to your local network, router settings, or passwords. It can only see what any public website can see about your internet connection.
Why do I need to use an external tool for the inbound port scan?
For security reasons, a web page cannot scan your computer for open ports. The scan must originate from an external server. We link to a trusted, well-known service for this purpose so you can get an accurate result safely.
My score is low. What is the single most important thing I can do to fix it?
Use a reputable VPN. A good VPN will mask your IP, change your ISP and location data, and often protect against WebRTC leaks, fixing the most critical vulnerabilities at once and dramatically improving your score.
Do you store any of my network information?
No. We are a privacy-first platform. All tests are run on your device (client-side), and your IP address, location, and test results are never logged or stored on our servers.
Need Help or Have Questions?
Our support team is ready to assist you with any questions or technical issues.
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