port.scan
Configure port range and click Scan to begin
Scan Statistics
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Scanned
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Open
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Closed
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Filtered
About Port Scanning
Port scanning is a technique used to identify open ports and services on a networked host. It is a fundamental step in network reconnaissance and security auditing.
Each port can be in one of three states:
Open - A service is actively listening and accepting connections.
Closed - The port is reachable but no service is listening.
Filtered - A firewall or filter is blocking probe packets.
Educational Note: This is a simulation for learning purposes. No actual network scanning is performed. In practice, port scanning without authorization may violate laws and network policies. Always obtain permission before scanning any network.
Common Scan Types
TCP Connect - Completes a full TCP handshake. Reliable but easily detected by IDS/IPS systems.
SYN Scan - Sends SYN packets without completing the handshake. Faster and stealthier than connect scans.
UDP Scan - Sends UDP datagrams to detect UDP services. Slower due to lack of connection-oriented responses.