Firewall Rules Guide
NETGuide to writing and understanding firewall rules.
Enter a value and click Analyze
📖 How to Use Firewall Rules Guide
1
Enter the network address or data
Input IP addresses, hostnames, or network parameters.
2
Calculate or analyse
Guide to writing and understanding firewall rules.
3
View the results
See subnet ranges, network details, or analysis results.
💡 Examples
Network analysis
INPUT
IP address or network configuration→
OUTPUT
Network calculation result with details🚀 Pro Tips
✓For subnetting, use CIDR notation (e.g. 192.168.1.0/24) for clear and unambiguous notation.
✓Always document your network address plan before implementation.
✓Private IP ranges: 10.x.x.x, 172.16.x.x–172.31.x.x, 192.168.x.x (RFC 1918).