A port scanner probes a server to find which TCP/UDP ports are open and what services are running on them. It's the first step in understanding a server's attack surface.
Is this tool powered by Nmap? +
Yes. We use Nmap with service version detection (-sV) to identify running services. The free tier scans the top 100 most common ports.
Is it legal to scan ports? +
You should only scan infrastructure you own or have explicit authorization to test. Unauthorized port scanning may violate laws in your jurisdiction.
What's the difference between free and Pro? +
Free scans the top 100 ports with 3 scans per day. Pro unlocks all 65,535 ports, unlimited scans, API access, export, and scheduled monitoring.