Port Scanner
Scan an IP address or domain to find open ports. Check common ports or specify custom ones.
Scan Results for:
| Port | Service | Status | Response Time |
|---|
About Port Scanning
A port scanner is an application designed to probe a server or host for open ports. This is often used by administrators to verify security policies of their networks and by attackers to identify network services running on a host and exploit vulnerabilities.
Note: This tool performs a basic TCP connect scan. It only scans the specific ports requested and does not perform aggressive scanning.
About Port Scanner
Scan an IP address or domain to find open ports. A basic port scanner for network troubleshooting.
Test selected TCP ports on an authorized host to find reachable services, unexpected exposure, and firewall behavior.
Key features
- Diagnostic scope Test selected TCP ports on an authorized host to find reachable services, unexpected exposure, and firewall behavior.
- Target input Enter a domain or public IP you own or have permission to test, then choose individual ports, common ports, or an allowed range.
- Checks to review Set the port selection and timeout or scan profile available on the page; keep the target stable during the scan.
- Diagnostic result The report marks ports as reachable, closed, filtered, or timed out where the probe can distinguish those states.
How to use Port Scanner
Follow this workflow to work with TCP service ports safely and accurately.
- Enter the target Enter a domain or public IP you own or have permission to test, then choose individual ports, common ports, or an allowed range.
- Select the diagnostic scope Set the port selection and timeout or scan profile available on the page; keep the target stable during the scan.
- Run the network check Run the TCP service ports diagnostic and retain status, timing, returned values, and the observation point needed to reproduce it.
- Correlate the result The report marks ports as reachable, closed, filtered, or timed out where the probe can distinguish those states.
Usage tips
- Scan only systems for which you have explicit authorization.
- Verify every open port against the intended service inventory and restrict management interfaces by network policy.
- Repeat from the relevant client network because firewall and load-balancer rules are source-dependent.