Port Scanner
Quickly identify open, closed, or filtered ports on any host or domain. Essential for network administrators, security professionals, and IT enthusiasts.
Port scanning should only be performed on networks and systems you own or have explicit permission to test.
Port scanning is the process of sending messages to a host's ports to identify which ports are open and can receive or send data. It's a fundamental technique used by network administrators to verify security policies and by attackers to identify running services and potential vulnerabilities on a target system. Our Port Scanner tool simplifies this process, providing quick and accurate results.
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.
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.
Always ensure you have explicit permission before scanning any host or network that you do not own.
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.
Proactive scanning for a safer network.