A LITTLE HELP FOR YOUR NEXT TASK
IP Allowlist Rule Tester
Simulate ordered allow and deny rules against supplied addresses.
Private by design
Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.
Preparing local security workspace…
How to use IP Allowlist Rule Tester
- Enter one allow or deny CIDR rule per line.
- Paste the IP addresses to evaluate and choose a default action.
- Review the first matching rule for each address.
What are the limits of IP Allowlist Rule Tester?
Local simulation only; does not configure a firewall. First match wins, not longest-prefix matching. Up to 200 rules and 1,000 addresses. This tool processes inputs in browser memory and makes no upload or lookup request. Clear inputs or close the tab when finished. Exports and clipboard actions are explicit.