Initial commit for powershell scripts.

scripts/AddDNSClient.ps1

@@ -0,0 +1,56 @@
+#Requires -RunAsAdministrator
+
+<#
+.SYNOPSIS
+    Configures static DNS server addresses on active network adapters.
+
+.DESCRIPTION
+    This script retrieves all active (connected) network interfaces on the endpoint and assigns 
+    primary DNS (Quad9) and secondary backup DNS (Cloudflare) servers.
+
+.NOTES
+    Created:     2025-03-02
+    Modified:    2026-10-04
+    
+    DNS Server Mappings:
+      - Quad9 Primary:   9.9.9.9        (Malware blocking + DNSSEC)
+      - Quad9 Secondary: 149.112.112.11 (Malware blocking + DNSSEC)
+      - Cloudflare Prim: 1.1.1.2        (Malware blocking) 
+      - Cloudflare Sec:  1.0.0.2        (Malware blocking)
+      
+      * Note: If adult content blocking is also desired via Cloudflare, 
+        use 1.1.1.3 and 1.0.0.3 instead.
+#>
+
+[CmdletBinding(SupportsShouldProcess = $true)]
+param (
+    # Array of DNS IPv4 addresses in priority order
+    [string[]]$DnsServers = @("9.9.9.9", "149.112.112.11", "1.1.1.2", "1.0.0.2")
+)
+
+# 1. Retrieve active/connected network adapters (filters out disabled, virtual, or disconnected NICs)
+$ActiveAdapters = Get-NetAdapter | Where-Object { $_.Status -eq 'Up' }
+
+if (-not $ActiveAdapters) {
+    Write-Warning "No active network adapters found on this endpoint."
+    return
+}
+
+# 2. Apply DNS settings to each active interface
+foreach ($Adapter in $ActiveAdapters) {
+    
+    $InterfaceName  = $Adapter.Name
+    $InterfaceIndex = $Adapter.InterfaceIndex
+
+    if ($PSCmdlet.ShouldProcess("Interface: $InterfaceName (Index: $InterfaceIndex)", "Set DNS servers to $($DnsServers -join ', ')")) {
+        try {
+            # Set the static DNS client addresses
+            Set-DnsClientServerAddress -InterfaceIndex $InterfaceIndex -ServerAddresses $DnsServers -ErrorAction Stop
+            
+            Write-Host "Successfully updated DNS for '$InterfaceName' (Index: $InterfaceIndex)" -ForegroundColor Green
+        }
+        catch {
+            Write-Error "Failed to update DNS on interface '$InterfaceName' (Index: $InterfaceIndex). Error: $_"
+        }
+    }
+}