issue related to data upload from local network

Hi expert,

I have to upload time data in infotype 2011 using BDC. The BDC has to run on a schedular on every 2 hour in background. The input text file will also be coming with the same frequency as that of program run in a server which is in local network of client.

The client is saying that the server upon which the file will be coming will be in local network means the SAP server will also be in that network.

Please let me know how to write the prog for this.

As I do not have idea in this regard.