External call to ASP loses init-values from global.asa

[FrankExp]

I have a w2003 server running IIS 6.0.

I can call my asp-pages using an internal laptop. The call starts on a website (internal) by clicking on a button.

I am trying to do the same using a startingpoint on a external website (so on the internet). What I see is that the ASP-page loses its info initiated in the global.asa

When I do the same using a windows mobile the call succeeds.

I have tried almost all the options:
External website and external address of the router to the server: flaw
Internal website and internal address on the same server: ok
Internal website and internal address on different server: ok
Internal website and external address on the same server: ok
Internal website and external address on different server: ok
Internal website and external address of the router, on the same server: ok
Internal website and external address of the router, on different server: ok

Can anyone help? Do I need to reconfig IIS?
And please tell me how!!

Frank