[ GF.dev ] All Tools →

Open Port Scanner

Check if your server is accessible from the outside world. This tool scans specific ports (HTTP and HTTPS) to ensure your web server is listening correctly or to verify that firewalls are blocking unwanted traffic.

Ready to scan...

Frequently Asked Questions

What does 'Connection Refused' mean?

It usually means the server is online but no application is listening on that specific port, or a firewall is actively blocking the connection.

Can I scan custom ports?

Currently, this free tool scans standard web ports (80 and 443) to verify basic web server accessibility.