Short memo: This is the FTP proxy authentication format of “Check Point” for the FileZilla FTP Client. I needed it for my Cisco WSA (Web Security Appliance) laboratory in the case of an enabled proxy authentication.
The complete settings look like the following picture. Note that the Proxy-User credentials at the bottom are the ones to authenticate against the proxy. These are NOT the FTP login credentials.
A few more information, also for the “Raptor” authentication format, can be found out here.