DSCResources/xPSDesiredStateConfiguration/Modules/xPSDesiredStateConfiguration.Firewall/xPSDesiredStateConfiguration.Firewall.psm1
|
$modulePath = Split-Path -Path $PSScriptRoot -Parent # Import the shared modules Import-Module -Name (Join-Path -Path $modulePath ` -ChildPath (Join-Path -Path 'xPSDesiredStateConfiguration.Common' ` -ChildPath 'xPSDesiredStateConfiguration.Common.psm1')) # Import Localization Strings $script:localizedData = Get-LocalizedData -ResourceName 'xPSDesiredStateConfiguration.Firewall' -ScriptRoot $PSScriptRoot New-Variable -Name FireWallRuleDisplayName -Value 'DSCPullServer_IIS_Port' -Option ReadOnly -Scope Script -Force New-Variable -Name netsh -Value "$env:windir\system32\netsh.exe" -Option ReadOnly -Scope Script -Force <# .SYNOPSIS Create a firewall exception so that DSC clients are able to access the configured Pull Server .PARAMETER Port The TCP port used to create the firewall exception #> function Add-PullServerFirewallConfiguration { [CmdletBinding()] param ( [Parameter()] [ValidateRange(1, 65535)] [System.UInt32] $Port ) Write-Verbose -Message 'Disable Inbound Firewall Notification' $null = & $script:netsh advfirewall set currentprofile settings inboundusernotification disable $ruleName = $FireWallRuleDisplayName # Remove all existing rules with that displayName $null = & $script:netsh advfirewall firewall delete rule name=$ruleName protocol=tcp localport=$Port Write-Verbose -Message "Add Firewall Rule for port $Port" $null = & $script:netsh advfirewall firewall add rule name=$ruleName dir=in action=allow protocol=TCP localport=$Port } <# .SYNOPSIS Delete the Pull Server firewall exception .PARAMETER Port The TCP port for which the firewall exception should be deleted #> function Remove-PullServerFirewallConfiguration { [CmdletBinding()] param ( [Parameter()] [ValidateRange(1, 65535)] [System.UInt32] $Port ) if (Test-PullServerFirewallConfiguration -Port $Port) { # remove all existing rules with that displayName Write-Verbose -Message "Delete Firewall Rule for port $Port" $ruleName = $FireWallRuleDisplayName # backwards compatibility with old code if (Get-Command -Name Get-NetFirewallRule -CommandType Cmdlet -ErrorAction:SilentlyContinue) { # Remove all rules with that name Get-NetFirewallRule -DisplayName $ruleName | Remove-NetFirewallRule } else { $null = & $script:netsh advfirewall firewall delete rule name=$ruleName protocol=tcp localport=$Port } } else { Write-Verbose -Message "No DSC PullServer firewall rule found with port $Port. No cleanup required" } } <# .SYNOPSIS Tests if a Pull Server firewall exception exists for a specific port .PARAMETER Port The TCP port for which the firewall exception should be tested #> function Test-PullServerFirewallConfiguration { [CmdletBinding()] [OutputType([System.Boolean])] param ( [Parameter()] [ValidateRange(1, 65535)] [System.UInt32] $Port ) # Remove all existing rules with that displayName Write-Verbose -Message "Testing Firewall Rule for port $Port" $ruleName = $FireWallRuleDisplayName $result = & $script:netsh advfirewall firewall show rule name=$ruleName | Select-String -Pattern "LocalPort:\s*$Port" return -not [string]::IsNullOrWhiteSpace($result) } |