Free Port Scanner
Scan any host for open ports in seconds
Enter a hostname or IP address to scan for open ports across common services. This tool checks well-known ports for HTTP, HTTPS, databases, mail servers, and more — then provides a detailed analysis of your exposed attack surface and remediation recommendations.
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How it works
How Port Scanner works
Enter a target host
Type any hostname or IP address. We normalize the input and resolve it before scanning to ensure accurate results.
Probe common ports
We attempt connections to 15 well-known ports covering web servers, databases, mail services, SSH, and more. Each port is tested with a short timeout to detect responsive services.
Review your exposure
Get a breakdown of which ports responded, what services typically run on them, and specific recommendations to reduce your external attack surface.
Features
What Port Scanner checks
Scan 15 well-known service ports
Checks HTTP (80), HTTPS (443), alternate web ports (8080, 8443), SSH (22), FTP (21), SMTP (25), DNS (53), POP3 (110), IMAP (143), and database ports (MySQL 3306, PostgreSQL 5432, Redis 6379, MongoDB 27017).
Detect exposed database services
Identifies publicly accessible MySQL, PostgreSQL, Redis, and MongoDB ports — one of the most common misconfigurations that leads to data breaches.
Identify unnecessary open ports
Flags services like FTP, SMTP, and development servers (port 3000) that are often left open unintentionally and expand your attack surface.
Get remediation guidance
Receive specific firewall rules and configuration changes to close unnecessary ports and restrict access to essential services only.
Use cases
Who should use the free Port Scanner
System Administrators
Verify that only intended services are externally accessible after firewall changes, server migrations, or cloud infrastructure updates.
Security Engineers
Perform quick reconnaissance on external-facing assets to identify exposed services that should be behind a VPN or firewall.
Penetration Testers
Start an engagement with rapid port enumeration to identify the attack surface before deep-diving into specific service vulnerabilities.
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Frequently asked questions
Everything you need to know about the free Port Scanner.
Go beyond Port Scanner
This free Port Scanner checks a handful of things. Maced's AI pentest checks thousands.
Get a full autonomous penetration test — including OWASP Top 10, authentication flaws, business logic errors, API security, and more — with a compliance-ready report in hours.
Proof of exploit on every finding · SOC 2 & ISO 27001 compatible