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PASSEDvendor / sonicwall_content_filtering_block
SonicWall Content Filtering Blocking Business App
A SonicWall TZ670 content filter policy update blocks access to a critical cloud accounting application by miscategorizing it as gambling/gaming, affecting all finance department workflows.
Pattern
UNKNOWN
Severity
CRITICAL
Confidence
95%
Remediation
Remote Hands
Test Results
| Metric | Expected | Actual | Result |
|---|---|---|---|
| Pattern Recognition | UNKNOWN | UNKNOWN | |
| Severity Assessment | CRITICAL | CRITICAL | |
| Incident Correlation | Yes | 18 linked | |
| Cascade Escalation | N/A | No | |
| Remediation | — | Remote Hands — Corax contacts on-site support via call, email, or API |
Scenario Conditions
SonicWall TZ670 with Content Filtering Service. CFS database update reclassified accounting SaaS. Finance department of 40 users affected. No CFS exclusion list configured.
Injected Error Messages (2)
sonicwall content filtering service blocking accounting application — TZ670 CFS categorizing accounting.saasapp.com as 'gambling', sonicwall CFS policy action: block, all HTTPS requests to accounting SaaS receiving sonicwall block page, 40 finance users unable to access billing and invoicing system
sonicwall TZ670 CFS log: 2400 blocked requests to accounting.saasapp.com in last hour — content filtering category: gambling/gaming (incorrect), sonicwall CFS database version 2026.03.28.1 introduced miscategorization, content filter override not configured, finance department workflows halted
Neural Engine Root Cause Analysis
The SonicWall TZ670 Content Filtering Service (CFS) has incorrectly categorized the legitimate business application accounting.saasapp.com as 'gambling' content, triggering the firewall's block policy for that category. This is a false positive classification by the SonicWall's URL categorization database, causing all HTTPS requests to the accounting SaaS to be intercepted and blocked at the network perimeter. The issue affects 40 finance users and represents a critical business application outage due to network security misconfiguration rather than application failure.
Remediation Plan
1. Immediately access SonicWall TZ670 management interface and navigate to Content Filter settings. 2. Create an explicit allow rule for accounting.saasapp.com to bypass content filtering. 3. Alternatively, whitelist the domain in the gambling category exceptions or move it to a business/productivity category. 4. Apply the configuration changes and test access to the accounting application. 5. Submit a URL recategorization request to SonicOS/SonicWall to correct the misclassification in their global database. 6. Monitor for similar false positives on other business applications.
Tested: 2026-03-30Monitors: 2 | Incidents: 2Test ID: cmnck4pgi06ovobqepofq9ow2