Chapter 1 What’s New for FortiOS 5.2.1 : System Features
  
System Features
New system features include:
FortiExtender Support
Using a Virtual WAN Link for Redundant Internet Connections
FortiGuard Services
Netflow v9.0
Using a Virtual WAN Link for Redundant Internet Connections
Improvements to Aggregate/Redundant Interfaces
Link Layer Description Protocol
Improvements to Aggregate/Redundant Interfaces
Custom Languages for Guest Management and SSL VPN Portals
Packet Capture Options for Admin Profiles
FortiCloud Modem List
SPAN Support for Hard-Switch Interfaces
Setting the Service and AC-name in PPOE PADI/PADO Negotiations
Disabling FortiExplorer, the USB MGMT Port, and the Serial Console
Port Kernel Profiling
Using a Second Destination IP (VRDST)
Disable Honoring the Don't-Fragment Flag
Disable Login Time Recording
Per-IP-Bandwidth-Usage Feature Removed
Modem Support