Powershell - Check if computer is On-Premise, on VPN, or outside on the Public Internet

Powershell - Check if computer is on premises (or VPN) or outside on the Internet

If, when you run the following command, your domain name appears in the list then your computer is inside of your network boundary (could be physically inside or on VPN).

(Get-NetIPConfiguration | Where-Object { $_.NetAdapter.Status -ne "Disconnected" }).NetProfile.Name

So, expanding on that command, here's a script that you can use in something like an SCCM configuration item to check it:

<#
.Synopsis
   Check-NetBoundary checks if the computer is inside the network, on VPN, or outside on the internet
.DESCRIPTION
   Returns "Public", "On-Premises", or "VPN" depending on results.
   Check-NetBoundary checks if the computer is inside the network or outside on the internet
   This was originally written to determine if computers were connected on VPN or not but may have other uses.
   Change the variable $CompanyNetProfileName to equal your own domain name (or the name given to your network connection profile if it is different than your domain).
   Written 01/14/2021 by Mark Randol - randoltech.blogspot.com
#>


CLS
$CompanyNetProfileName = "mydomain.com"
$Location = "Public"
$InsideBoundary = $false
if (Get-NetIPConfiguration | Where-Object { $_.NetAdapter.Status -ne "Disconnected" -and $_.NetProfile.Name -eq $CompanyNetProfileName}) {
    $Location = "On-premises"
    if (Get-NetIPConfiguration | Where-Object { $_.NetAdapter.Status -ne "Disconnected" -and $_.NetProfile.Name -ne $CompanyNetProfileName}) {
        $Location = "VPN"
    }
}
Write-Output $Location