Run JS and CSS fonts from local server

Hi! I’m running an intranet portal for a range of users who have and others don’t have Internet access.

The ones with WAN connection obviously fetch every asset from the web, and display it fine.
The others without proxy, just can’t get the remote fonts, js, and styles from the web.

I understand the path for the enqueue files and styles runs from the “functions.php” of the theme, but is there any way for this content to copy, store and run from my local server?
Are there any other files and paths to have in mind for this to be done?

Thanks in advance