Chapter 23 WAN Optimization, Web Cache, Explicit Proxy, and WCCP : The FortiGate explicit FTP proxy : Example: users on an internal network connecting to FTP servers on the Internet through the explicit FTP with RADIUS authentication and virus scanning : General configuration steps
  
General configuration steps
This section breaks down the configuration for this example into smaller procedures. For best results, follow the procedures in the order given:
1. Enable the explicit FTP proxy and change the FTP port to 2121.
2. Enable the explicit FTP proxy on the internal interface.
3. Add a RADIUS server and user group for the explicit FTP proxy.
4. Add a user identity security policy for the explicit FTP proxy.
Enable antivirus and DLP features for the identity-based policy.