How to protect SQL servers from Injection attacks

Step 1:
Enable IPS for LAN and WAN Zones: 

• Navigate to Network | Zones.
  
• Under "Configure" Click on "edit pencil circle" button to enable IPS on LAN and WAN zones.

Step 2:
Enable the prevention for SQL-Injection: 

• Navigate to Security Services | Intrusion Prevention.
  
• Enable IPS.
  
• Enable Prevent all for High and Medium priority attacks, and Detect all for High , Medium and Low priority attacks.
  
• Select SQL-Injection. 
  
• Click on configure and enable the Prevention.