RT9420
Synology RT9420 Security Error
Synology
Security Error
MR-Series
79% fix rate
Cause
Rogue DHCP server detected on network segment
Fix Steps
- Access router admin panel immediately
- Navigate to Security or Firewall settings
- Review connected devices list for unauthorized access
- Change WiFi password and admin panel password
- Enable automatic security threat detection
- Update firmware to latest security patch