Igor,
The service number 60 (ftp-native service) only applies to transparent redirection of FTP native requests and does not apply to FTP-over-HTTP requests.
On the other hand; the Content Engine listens for redirected HTTP requests on the standard HTTP port (default port 80). To enable the Content Engine to listen for WCCP-intercepted HTTP traffic on ports other than the default port, configure the custom-web-cache service (98 and 99) or a user-defined WCCP service (services 90 to 97).
I hope this helps.
Regards,
Juan Lombana
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