Chapter 10 Install and System Administration for FortiOS 5.0 : Best practices
  
Best practices
The FortiGate unit is installed, and traffic is moving. With your network sufficiently protected, you can now fine-tune the firewall for the best performance and efficiency. This chapter describes configuration options that can ensure your FortiGate unit is running at its best performance.
This section includes the topics on:
Hardware
Shutting down
Performance
Firewall
Intrusion protection
Antivirus
Web filtering
Antispam