Scan common ports on any server to check which are open, closed, or filtered. Check HTTP, HTTPS, SSH, FTP, SMTP, and more.
A port scan probes a server to identify which network ports are open and accepting connections. Common ports include 80 (HTTP), 443 (HTTPS), 22 (SSH), 25 (SMTP), and 3306 (MySQL). Open ports indicate running services. Unexpected open ports can signal security risks.
Run this check every minute, 24/7. Get alerted by email, SMS, or webhook when something breaks.
Start Monitoring FreeWe scan common service ports: HTTP (80, 8080), HTTPS (443), SSH (22), FTP (21), SMTP (25, 587), DNS (53), MySQL (3306), PostgreSQL (5432), and others. You can also specify custom ports.
Scanning your own servers is always fine. Scanning others' servers for security research is generally acceptable but check local laws. This tool is designed for checking your own infrastructure.
Investigate which service is listening, whether it should be public, and close it if not needed. Use firewall rules to restrict access to ports that should be internal only.
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