Setting IP restrictions on your central administration server in IIS with PowerShell

To set an IP restriction on your central administration with PowerShell you need to do the following:

- First set deny all
Set-WebConfigrationProperty –Filter system.webServer/security/ipSecurity –PSPath ‘IIS:\’ –Name allowUnlisted –Location “SharePoint Central Administration v4” –Value $false

- Second set allow for a specific IP Address
Add-WebConfiguration system.webServer/security/ipSecurity –location “IIS:\Sites\SharePoint Central Administration v4” –Value @{ipAddress=”$(Get-IPAddress)”;allowed=”true”} –PSPath IIS:\

The Get-IPAddress function is a function to get the IP address of the current PC:

function Get-IPAddress() {

return (gwmi Win32_NetworkAdapterConfiguration |? { $_.IPAddress –ne $null }).IPAddress

}