If the client is running server with about 20 clints connected, is it possible to get the data feed to the web via CDML. So two machines one with server (master data) and ther other machine with FMP client hosting data from server?

For web access using FM Server, you will need one machine running FM Server and another machine running FileMaker Unlimited. This second machine will provide web access. Other machines running normal FM can provide local access to FM Server as needed. You can do limited web hosting with a normal copy of FM in place of FM Unlimited, but connections are limited to 10 IP addresses in a 12 hour period.

-bd