Online Port Scanner

ℹ️ About Online Port Scanner

This tool allows you to scan a domain or IP address for open network ports. Verify if key services like SSH, FTP, HTTP, or databases are accessible from the web, and check if your firewalls are blocking restricted services correctly.

Features

Why Use Our Port Scanner?

Audit server endpoints to detect unhardened or insecure services exposed to the public internet.

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Common Ports Verification

Scan key ports including FTP, SSH, DNS, Mail services, and database listeners instantly.

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Firewall Verification

Confirm if server firewall configurations are correctly shielding backend administrative systems.

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Dynamic History Tabs

Retain a list of recent host query tabs to switch between scans without triggering repeated connections.

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Low Latency Auditing

Checks ports in parallel with optimized connect timeouts to get fast results.

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Database Port Audits

Ensures backend database servers are not exposed to the public internet.

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Network Latency Check

Measures response connection speeds during socket sweeps.

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FAQ

Frequently Asked Questions

Find quick answers to common questions regarding port scanning and server connectivity auditing.

An "Open" port means a service application is actively listening for incoming connections on that port number.

It means the connection was rejected or timed out. This typically indicates that either no service is running on that port, or a network firewall is blocking the traffic.

Yes, auditing your own server configuration helps identify exposed services so you can secure them before attackers do.

Yes, some firewall rules discard unauthorized scan packets silently (Filtered), which makes the port appear stealth or closed.

Commonly targeted ports include FTP (21), SSH (22), Telnet (23), and RDP (3389). Closing unused ports reduces entry risk.