Online Port Scanner
Check for open ports and identify running services on any server or IP. An essential tool for network security audits and troubleshooting firewall rules.
Scan Network Ports
Port scanning should only be performed on networks and systems you own or have explicit permission to test.
Strengthen Your Network Security
A port scan is the first step in a security audit. By identifying open ports, you can understand your network's attack surface and ensure that only necessary services are exposed to the internet.
Identify Vulnerabilities
Unnecessary open ports are potential entry points for attackers. Use this tool to find and close ports that don't need to be public.
Verify Service Configuration
Ensure that services like SSH, FTP, or your web server are running on the correct ports and that your firewall rules are working as intended.
Troubleshoot Connectivity
Diagnose connection problems by checking if a required port is open on a server. If a port is closed, your application may not be able to connect.
Why Use Our Port Scanner?
Speed and Efficiency: Get fast results for single ports or entire port ranges.
User-Friendly Interface: Easy to use for both beginners and experienced professionals.
Comprehensive Results: Clearly identifies open, closed, and sometimes filtered ports, along with common services.
Security Audits: Helps you identify unnecessary open ports that could be security risks.
Network Troubleshooting: Useful for diagnosing network connectivity issues.
Port Scanner Features
Scan specific ports or a range of ports.
Select from a list of common predefined ports.
Clear indication of open and closed port statuses.
Attempts to identify the service running on open ports.
Responsive design for use on any device.
Progress indicator for longer scans.
Warning for scans that are truncated due to limits.
Who Should Use This Tool?
Network Administrators:
To manage and secure their network infrastructure.Security Professionals:
For penetration testing and vulnerability assessments (with permission).Web Developers:
To ensure their applications are accessible on the correct ports.IT Students & Enthusiasts:
To learn about network scanning and security concepts.Home Users:
To check the security of their home network devices.Always ensure you have explicit permission before scanning any host or network that you do not own.
Advanced Usage & Tips
Specific Port Ranges: For faster scans on large networks, specify smaller, targeted port ranges instead of scanning all 65535 ports. For example, use "80-100" instead of "1-65535".
Service Version Detection: While this tool identifies common services, advanced scanners can attempt to determine the version of the software running on an open port. This is crucial for vulnerability assessment.
Stealth Scans: Some advanced scanning techniques (e.g., FIN, Xmas, Null scans) are designed to be less detectable by firewalls and intrusion detection systems. These are typically used by security professionals.
Understanding Scan Limits: Our tool may have limits on the number of ports scanned simultaneously or the total number of ports per scan request to ensure fair usage and prevent abuse. If your scan is truncated, try a smaller range. For instance, if a scan of "1-1000" is truncated at 25 ports, try "1-25", then "26-50", and so on.
Ethical Considerations: Always respect the target system's resources and obtain proper authorization. Aggressive scanning can be disruptive. Never scan systems without permission.
Trust, Quality & Data Transparency
Expertise & Experience
Security operations & safe scanning practices experience ensures conservative connection strategies. We designed the Port Scanner features around realistic operational workflows.
Data Sources
Targeted TCP (SYN / connect) attempts on a curated, documented common service port set with adaptive timeouts.
Update Cadence & Quality
Service signature list and timing profiles reviewed; immediate updates for major CVE response considerations. The rating component reflects genuine user feedback (one rating per browser client ID) and is filtered for abuse.
Privacy & Ethics
Scanned host + port list not retained after summary generation; no broad / intrusive scanning performed. See our Privacy Policy for details. No personal account is required.
Frequently Asked Questions (FAQ)
Continue Your Investigation
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Improve Your Network Security Today
Proactive scanning for a safer network.