From NTA-Wiki
Platform Notes
FortiGate is a Firewall/VPN solution, manufactured by Fortinet, that runs on proprietary hardware.
It supports both site-to-site and remote access VPN.
Version History
Backoff Patterns
Vendor IDs
Authentication Methods
ISAKMP SA Lifetime
Lifetime in Seconds
Lifetime in Kilobytes
Transform Ordering and Rewriting
Aggressive Mode
Response to Noncompliant and malformed packets
No Acceptable Transforms
Bad IKE version
Invalid DOI
Invalid Situation
Invalid Initiator Cookie
Invalid Flags
Invalid Protocol
Invalid SPI
Non-Zero Reserved Fields
NAT Traversal
IKEv2
Remote Access VPN Client
Other Interesting Behaviour
Default Configuration
Discovered Vulnerabilities
Misc stuff