Port Check Tool
Use this port check page to validate service reachability before deeper network debugging.
Command Console
Use one shared command dropdown across all tools. Unavailable commands are shown as disabled.
What This Tool Does
Port checks verify if a target host accepts connections on selected TCP ports, helping identify firewall, NAT, or service binding issues.
How To Use It
- Enter a hostname or IP address.
- Specify one or multiple TCP ports to test.
- Review open, closed, or filtered results and investigate mismatches.
Common Use Cases
- firewall validation
- service availability checks
- post-deployment verification
Best Practices
Tips For Better Results
- Confirm the target application is running before testing.
- Check both standard and custom ports used by your service.
- Repeat checks from different networks when access policies vary.