Using an alternate block page on another machine
Instead of using the default block pages and customizing just the message in the top frame, you can create your own HTML block pages and host them on an internal web server.
Some organizations use alternate, remote block pages to hide the identity of the web protection server machine.
The remote block page can be any HTML file; it does not need to follow the format of the default block pages. Using this method to create block pages, however, does prevent you from using the Continue, Use Quota Time, and Password Override functions available with the pre-defined block pages (default or custom).
When the files are in place, edit the eimserver.ini file to point to the new block page.
When the services have started, users receive the block page hosted on the alternate machine.