Chapter 23 WAN Optimization, Web Cache, Explicit Proxy, and WCCP : The FortiGate explicit FTP proxy : Security profiles, threat weight, device identification, and the explicit FTP proxy
  
Security profiles, threat weight, device identification, and the explicit FTP proxy
You can apply antivirus, data leak prevention (DLP), and SSL/SSH inspection to explicit FTP proxy sessions. Security profiles are applied by selecting them in an explicit FTP proxy policy or an authentication rule in an FTP proxy security policy.
Traffic accepted by explicit FTP proxy policies contributes to threat weight data.
The explicit FTP proxy is not compatible with device identification.