Firewall Status Check Tool
This tool checks if your network firewall is blocking common ports or restricting outbound connections.
Idle. Ready to run the test.
Test Progress
What This Tool Does
This tool checks whether your network firewall is blocking common outbound ports used by browsers and apps.
Runs in Your Browser
No installs required — this test runs entirely in your browser using timed connection attempts.
Quick Start
- Click Run Firewall Check.
- Wait for the port tests to complete.
- Review which ports are open or blocked.
How It Works
- The tool attempts to connect to common ports.
- If the request succeeds, the port is considered open.
- If it fails, the port is likely blocked by your firewall or ISP.
What the Results Mean
- Open — No restrictions on common ports.
- Moderate — Some ports blocked (normal for many networks).
- Strict — Multiple ports blocked; apps may have issues.
Troubleshooting
- Restart your router.
- Disable VPNs or proxies.
- Check router firewall settings.
- Contact your ISP if ports are unexpectedly blocked.
Tips & Notes
- Browser‑based port tests are approximate.
- Some networks intentionally block ports for security.
- Corporate networks often use strict firewall rules.
Related Tools
- Port Scanner Tool
- Ping Test Tool
- Packet Loss Test Tool
FAQ
Can this detect inbound firewall rules?
No — browsers cannot test inbound ports.
Why are some ports blocked?
Security policies, ISP restrictions, or router settings.
Does this work on mobile?
Yes — mobile browsers support this test.