Firewall Rule Analyzer
See what your firewall rules actually allow.
Paste rules, visualize traffic paths, and catch risky exposure in seconds — no account, no setup.
6
Rules
2
Critical
0
High
2
Medium
2
Public
| Name | Action | Risk |
|---|---|---|
| allow-ssh | ALLOW | CRITICAL |
| allow-https-internal | ALLOW | — |
| allow-rdp | ALLOW | CRITICAL |
No
Account required
4+
Input formats
5
Risk severity levels
100%
Runs in browser
Try it — no signup required
Run a real analysis on a risky SSH rule and see what ./NET surfaces.
allow tcp from 0.0.0.0/0 to web-server port 22
Hit analyze to see the finding.
From raw config to clear answers
Stop digging through JSON and Terraform. Get the insight you need in one pass.
Spot risky rules fast
Find public SSH, broad 0.0.0.0/0 access, and missing logging before they reach prod.
See who can reach what
Visualize source-to-destination paths so network access is obvious, not buried in JSON.
Understand in plain English
Every rule gets a clear explanation — no more decoding Terraform or GCP firewall syntax.
Paste any format
GCP JSON, Terraform, or generic rules. Auto-detect handles the parsing for you.
Three steps. No learning curve.
Paste rules, get visual analysis. That's it.
Paste or upload
Drop in GCP JSON, Terraform, or a plain-text rule — no setup required.
Analyze instantly
Get normalized rules, traffic flows, and severity-ranked findings in seconds.
Fix with confidence
Read explanations and recommendations, then export results for your team.
Private by design
The current release uses sample analysis data in the browser. Firewall configurations you paste are not transmitted to a server.
Runs in your browser
Phase A analysis uses mock data locally. Your firewall rules are not uploaded.
No account required
Open the analyzer and start immediately. No signup, no API keys.
You control your data
Clear the workbench at any time. Nothing is stored in a database.
Built for engineers
Designed for security and platform teams who need fast answers, not sales calls.
Read the full privacy policy for details on data handling in mock and API phases.
About ./NET
./NET builds focused network security utilities for engineers and security teams. The Firewall Rule Analyzer is the first utility — more tools for CIDR analysis, rule comparison, and policy conflict detection are planned.
Your firewall rules deserve a second look.
Paste your config and see exposure, traffic paths, and findings in seconds.
Launch Firewall AnalyzerFree · No account · Runs in browser