Linux firewalld & nftables Port Access Rule Auditor
Audits Linux firewall port access rules for least-privilege exposure and restricted IP source binding.
Notice: engineering verification utility. Use test or de-identified data and verify results independently before relying on them.
How it works
Standard: Linux Kernel Netfilter & Firewalld Security Standards
Formula: Verify port number, protocol (TCP/UDP), and source CIDR block restriction
Checks: Firewall rule parameter verification
Calculated locally in browser memory; nothing leaves your browser.
Deterministic local-first client-side execution. Provided as-is without warranty.