How to change network firewall profiles within Windows 8 using PowerShell

To change network firewall profiles within Windows 8 using PowerShell (such as going from Public to Private), use the following command to list all network interfaces and the current values.

Get-NetConnectionProfile

To modify the profile, use the following command including the network interface to change and the new value.

Set-NetConnectionProfile -InterfaceAlias Ethernet -NetworkCategory Private