Free tools from the Net Bright team
Free
Firewall Rule Optimizer
Audit and optimize firewall policy across five vendors — in your browser
Paste or upload a firewall configuration and the tool instantly finds shadowed, redundant, mergeable and overly-permissive rules, maps the findings to CIS and PCI-DSS, lets you simulate a proposed rule before you commit it, and produces a clean optimized rule set together with a 0–100 Security Score.
Runs 100% in your browser. No configuration is ever uploaded — your firewall data never leaves your computer.
What it does
- Security Score 0–100 with a grade, and a breakdown of exactly where points were lost
- Detects shadowed, redundant, mergeable and overly-permissive (any-any) rules, plus unused rules from hit-count data
- Threat intel from CISA KEV — exposed services matched against actively-exploited CVEs
- Compliance mapping to CIS and PCI-DSS, Zero Trust maturity (NIST 800-207) and MITRE ATT&CK
- DDoS readiness score with vendor-specific hardening rule templates, and a segmentation score for lateral-movement resistance
- What-if simulator and packet tracer — see which rule wins for a given flow, and test a rule before committing it
- Zone-to-zone exposure heatmap and config diff against a previous version
- Generates a paste-ready optimized config, plus HTML/PDF reports and rule CSV
Who it helps
- Teams carrying years of accumulated firewall policy
- Organizations preparing for a CIS or PCI-DSS audit
- Anyone migrating or replacing a firewall who wants a clean rule set to carry over
- Change-review processes that need evidence before a rule goes live
At a glance
- Supported vendors
- Palo Alto · Fortinet · Cisco ASA/IOS · Check Point · pfSense / OPNsense
- Deployment
- Browser only — nothing to install
- Analysis
- IPv4 + IPv6, ~150 IANA service names resolved to ports
- Interface
- Bilingual EN / ไทย, dark and light theme
Request free access
Tell us a little about your environment and our team will send you access details and help you get started.
Open the toolDownload the user manual (PDF)Or have our team walk you through it
Delivering Superior IT Solutions
Helping organizations achieve operational excellence through Infrastructure, Cybersecurity, Cloud, AI, and Managed Services.