> Therefore in your case what do you think about writing a own
> replicator ?

That's too expensive both in time and costs. A possible solution could be a
application server, that's transparent to IBReplicator like ZeBeDee. The
architecture then looks like
FB-Server on Laptop --- IBReplicator --- AppClient --- Intenet ---
AppServer --- FB-Server in company
Do you know, if this is possible?

Regards

Guido