Modules/xPSDesiredStateConfiguration.Security/xPSDesiredStateConfiguration.Security.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.Security' -ScriptRoot $PSScriptRoot # Best Practice Security Settings Block $insecureProtocols = @("SSL 2.0", "SSL 3.0", "TLS 1.0", "PCT 1.0", "Multi-Protocol Unified Hello") $secureProtocols = @("TLS 1.1", "TLS 1.2") <# This list corresponds to the ValueMap definition of DisableSecurityBestPractices parameter defined in MSFT_xDSCWebService.Schema.mof #> $SecureTLSProtocols = 'SecureTLSProtocols' <# .SYNOPSIS This function tests if the SChannel protocols are enabled. #> function Test-SChannelProtocol { [CmdletBinding()] param () foreach ($protocol in $insecureProtocols) { $registryPath = "HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\$protocol\Server" if ((Test-Path -Path $registryPath) ` -and ($null -ne (Get-ItemProperty -Path $registryPath)) ` -and ((Get-ItemProperty -Path $registryPath).Enabled -ne 0)) { return $false } } foreach ($protocol in $secureProtocols) { $registryPath = "HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\$protocol\Server" if ((-not (Test-Path -Path $registryPath)) ` -or ($null -eq (Get-ItemProperty -Path $registryPath)) ` -or ((Get-ItemProperty -Path $registryPath).Enabled -eq 0)) { return $false } } return $true } <# .SYNOPSIS This function enables the SChannel protocols. #> function Set-SChannelProtocol { [CmdletBinding()] param () foreach ($protocol in $insecureProtocols) { $registryPath = "HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\$protocol\Server" $null = New-Item -Path $registryPath -Force $null = New-ItemProperty -Path $registryPath -Name Enabled -Value 0 -PropertyType 'DWord' -Force } foreach ($protocol in $secureProtocols) { $registryPath = "HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\$protocol\Server" $null = New-Item -Path $registryPath -Force $null = New-ItemProperty -Path $registryPath -Name Enabled -Value '0xffffffff' -PropertyType 'DWord' -Force $null = New-ItemProperty -Path $registryPath -Name DisabledByDefault -Value 0 -PropertyType 'DWord' -Force } } <# .SYNOPSIS This function tests whether the node uses security best practices for non-disabled items #> function Test-UseSecurityBestPractice { [CmdletBinding()] [OutputType([System.Boolean])] param ( [Parameter()] [System.String[]] $DisableSecurityBestPractices ) $usedProtocolsBestPractices = ($DisableSecurityBestPractices -icontains $SecureTLSProtocols) -or (Test-SChannelProtocol) return $usedProtocolsBestPractices } <# .SYNOPSIS This function sets the node to use security best practices for non-disabled items #> function Set-UseSecurityBestPractice { [CmdletBinding()] param ( [Parameter()] [System.String[]] $DisableSecurityBestPractices ) if (-not ($DisableSecurityBestPractices -icontains $SecureTLSProtocols)) { Set-SChannelProtocol } } |