Document Details

# Disable Private Link Service Network Policies
# https://learn.microsoft.com/azure/private-link/disable-private-endpoint-network-policy
$net =@{
    Name = 'AppGW-PL-PSH'
    ResourceGroupName = 'AppGW-PL-PSH-RG'
}
$vnet = Get-AzVirtualNetwork @net

($vnet | Select -ExpandProperty subnets | Where-Object {$_.Name -eq 'AppGW-PL-Subnet'}).PrivateLinkServiceNetworkPolicies = "Disabled"

$vnet | Set-AzVirtualNetwork

# Get Application Gateway Frontend IP Name
$agw = Get-AzApplicationGateway -Name AppGW-PL-PSH -ResourceGroupName AppGW-PL-PSH-RG
# List the names
$agw.FrontendIPConfigurations | Select Name

# Add a new Private Link configuration and associate it with an existing Frontend IP
$PrivateLinkIpConfiguration = New-AzApplicationGatewayPrivateLinkIpConfiguration `
                            -Name "ipConfig01" `
                            -Subnet ($vnet | Select -ExpandProperty subnets | Where-Object {$_.Name -eq 'AppGW-PL-Subnet'}) `
                            -Primary

# Add the Private Link configuration to the gateway configuration
Add-AzApplicationGatewayPrivateLinkConfiguration `
                            -ApplicationGateway $agw `
                            -Name "privateLinkConfig01" `
                            -IpConfiguration $PrivateLinkIpConfiguration

# Associate private link configuration to Frontend IP
$agwPip = ($agw | Select -ExpandProperty FrontendIpConfigurations| Where-Object {$_.Name -eq 'appGwPublicFrontendIp'}).PublicIPAddress.Id
$privateLinkConfiguration = ($agw | Select -ExpandProperty PrivateLinkConfigurations | Where-Object {$_.Name -eq 'privateLinkConfig01'}).Id
Set-AzApplicationGatewayFrontendIPConfig -ApplicationGateway $agw -Name "appGwPublicFrontendIp" -PublicIPAddressId $agwPip -PrivateLinkConfigurationId $privateLinkConfiguration

# Apply the change to the gateway
Set-AzApplicationGateway -ApplicationGateway $agw

# Disable Private Endpoint Network Policies
# https://learn.microsoft.com/azure/private-link/disable-private-endpoint-network-policy
$net =@{
    Name = 'AppGW-PL-Endpoint-PSH-VNET'
    ResourceGroupName = 'AppGW-PL-Endpoint-PSH-RG'
}
$vnet_plendpoint = Get-AzVirtualNetwork @net

($vnet_plendpoint | Select -ExpandProperty subnets | Where-Object {$_.Name -eq 'MySubnet'}).PrivateEndpointNetworkPolicies = "Disabled"

$vnet_plendpoint | Set-AzVirtualNetwork

# Create Private Link Endpoint - Group ID is the same as the frontend IP configuration
$privateEndpointConnection = New-AzPrivateLinkServiceConnection -Name "AppGW-PL-Connection" -PrivateLinkServiceId $agw.Id -GroupID "appGwPublicFrontendIp"

## Create private endpoint
New-AzPrivateEndpoint -Name "AppGWPrivateEndpoint" -ResourceGroupName $vnet_plendpoint.ResourceGroupName -Location $vnet_plendpoint.Location -Subnet ($vnet_plendpoint | Select -ExpandProperty subnets | Where-Object {$_.Name -eq 'MySubnet'}) -PrivateLinkServiceConnection $privateEndpointConnection