• SonicOS 7.1
• About SonicOS
  • Working with SonicOS
  • SonicOS Workflow
  • How to Use the SonicOS Administration Guides
  • Guide Conventions
• About Policy
  • DNS Security Introduction
  • DNS Filtering Dashboard
• Configuring DNS Security Settings
  • About DNS Filtering
    • Configuring DNS Filtering
  • Configuring DNS Sinkhole Service
    • Deleting Entries in the Custom Malicious Domain Name List
  • Configuring DNS Tunnel Detection
    • Configuring DNS Tunnel Detection
    • Detected Suspicious Client Information
    • Creating White list for DNS Tunnel Detection
    • Deleting White List Entries for DNS Tunnel Detection
  • White List
• Reports
  • Statistic
  • Domain
  • Host
  • Database
• SonicWall Support
  • About This Document

Configuring DNS Tunnel Detection

To configure DNS tunnel detection

1. Navigate to POLICY | DNS Security > Settings.
2. Click the DNS Tunnel Detection tab.
3. Under Settings, select Enable DNS Tunnel Detection to enable DNS tunnel detection.
4. To block all the DNS traffic from the detected clients, select Block All The Clients DNS Traffic.
5. Click Accept.