I appreciate your getting back to us, @QucBk_desktop_developer.

I have reviewed the thread and understand the urgency of whitelisting Intuit IP addresses for your QuickBooks Desktop (QBDT) Enterprise. I recommend posting your concern again in the Intuit Developer forum, as only they can share the list of IP addresses you can add as an exception to your PC's firewall settings. 

When this is resolved, you can refer to this article on how to let other computers access QBDT company files from a host computer. 

You're always welcome in the Community should you have other concerns about the QBDT setup. We'll do our best to assist. Take care.