Using ZDektop to test zimlets : localhost problem.

[tullio0106]

I need to test an integration zimlet.
I need to read, like AlFresco or Flickr zimlets, an attachment from outside.
I tried to test my capabilty to read that file printing the URL and using it into a browser :it works.
When I try to substitute localhost with the real IP address of the system I get network problems and it doesn't work, also if I execute it from the same computer where Jetty works.
How can I solve that issue ?
Tks
Tullio