It is automatically shared over the network and in fact from my computer when I double click on SHIELD network location now I have two folders: internal and external. I can still read/write on the internal folders and I can read contents of external without any issue. However I cannot WRITE on the external hard drive over the network.

How to share a folder or hard drive on your home network Apr 09, 2016 Adding an external hard drive to your network - Linksys An external hard drive is a data storage device that can store digital data and can be attached to your computer through a USB port. This article will provide you with instructions on how to connect and map your external hard drive to your network for easy access. How to Share Devices With Others On the Network Apr 30, 2019 Share Your External Hard Drive to Your Wi-Fi Network | B&H

Share Your External Hard Drive to Your Wi-Fi Network | B&H

Which Is Better: Network Storage or External Hard Drive?

How to share and access files on your local network drive

The third way to share storage between Macs and PCs is to plug a USB or FireWire drive into the Mac, and then have the PC back up to it over the network using file sharing.