Firewall rule configurations

Name: Firewall rule configurations
Creator: TestPattern Community
License: https://opensource.org/licenses/MIT

Identifies firewall rule configurations patterns in security and access control contexts. Detects potential exposure of sensitive security information in international systems.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: structural regex with domain-specific anchors and constrained context replaces phrase-only marker. Added context gating and exclusion rules improve precision and reduce incidental matches.
Detection quality: Topic false positive
Jurisdictions: global
Regulations: GDPR
Frameworks: ISO 27001, NIST CSF
Data categories: credentials, security
Scope: wide
Risk rating: 8
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?is)\b(?:firewall\s+rule|security\s+group|access\s+control\s+list|network\s+policy|port\s+rule|ip\s+whitelist|deny\s+rule|allow\s+rule|packet\s+filter)\b

Corroborative evidence keywords

firewall rule configurations, firewall, rule, configurations, security, operations, threat, data

Proximity: 300 characters

Should match

firewall rule — Primary topic phrase match
security group — Case-insensitive topic phrase match
access control list — Alternative topic phrase match
network policy — Additional topic phrase match
firewall rule Host: fw01.corp 10.20.30.40 Rule 14: allow tcp/443 from 10.20.0.0/16 Finding: CVE-2025-21298 unpatched on asset ID WS-004471. — Populated tech record reaching the 75/85 structure gate

Should not match

unrelated generic text without domain phrases — No relevant topic phrases present
placeholder value 12345 — Random text should not match topic-specific regex
firewall deny — Generic word pair from old broad template should not match
Policy guidance: this procedure explains how records about firewall rule are handled, who may access them and how long they are kept. It contains no records about any person or system. — Policy guidance naming the topic without any record (discovery only)

Known false positives

Authentication-related terminology in software documentation, security training materials, or system architecture descriptions without actual credentials. Mitigation: Require proximity to credential-specific patterns (API keys, connection strings, tokens) rather than general security terminology.
Code snippets and configuration examples containing credential-related keywords or placeholder values in developer documentation. Mitigation: Check for common placeholder patterns (example.com, localhost, 0000) and documentation file types to reduce false positives from technical writing.