dbatools

1.1.34

internal/functions/Initialize-CredSSP.ps1

                                function Initialize-CredSSP {

    <#

    .SYNOPSIS

        Configure local and remote computers to use Credssp protocol

    .DESCRIPTION

        Enables both local and remote machine to participate in a Credssp session.

        Local computer will be told to trust the Delegate (remote) computer.

        Remote computer will be configured to act as a server and accept client connections from local computer.

        This function can be disabled by setting the value of configuration item "commands.initialize-credssp.bypass" to $true.

    .PARAMETER ComputerName

        Remote computer name

    .PARAMETER Credential

        PSCredential object used for authentication

    .PARAMETER EnableException

        By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.

        This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.

        Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.

    .EXAMPLE

        PS C:\> Initialize-CredSSP MyRemoteComputer

        # Configure CredSSP protocol to connect to remote computer MyRemoteComputer

    .EXAMPLE

        PS C:\> $cred = Get-Credential

        PS C:\> Initialize-CredSSP -ComputerName PC2 -Credential $cred

        # Configure CredSSP protocol to connect to remote computer with custom credentials

#>

    Param (

        [Parameter(Mandatory, Position = 1)]

        [string]$ComputerName,

        [pscredential]$Credential,

        [bool]$EnableException

    )

    #Check to see if this function is bypassed

    if ( ( Get-DbatoolsConfigValue -FullName 'commands.initialize-credssp.bypass') -eq $true ) {

        Write-Message -Level Verbose -Message "CredSSP initialization bypass (commands.initialize-credssp.bypass) is set to $true";

        return;

    }

    #Configure local machine

    #Start local WinRM service

    if ((Get-Service WinRM).Status -ne 'Running') {

        $null = Get-Service WinRM -ErrorAction Stop | Start-Service -ErrorAction Stop

        Start-Sleep -Seconds 1

    }

    #Get current config

    try {

        $sspList = Get-WSManCredSSP -ErrorAction Stop

    } catch {

        Stop-Function -Message "Failed to get a list of CredSSP hosts" -ErrorRecord $_

        return

    }

    #Enable delegation to a remote server if not declared already

    if ($sspList -and $sspList[0] -notmatch "wsman\/$([regex]::Escape($ComputerName))[\,$]") {

        Write-Message -Level Verbose -Message "Configuring local host to use CredSSP"

        try {

            # Enable client SSP on local machine

            $null = Enable-WSManCredSSP -role Client -DelegateComputer $ComputerName -Force -ErrorAction Stop

        } catch {

            Stop-Function -Message "Failed to configure local CredSSP as a client" -ErrorRecord $_

        }

    }

    # Configure remote machine

    Write-Message -Level Verbose -Message "Configuring remote host to use CredSSP"

    try {

        Invoke-Command2 -ComputerName $ComputerName -Credential $Credential -Raw -RequiredPSVersion 3.0 -ScriptBlock {

            $sspList = Get-WSManCredSSP -ErrorAction Stop

            if ($sspList[1] -ne 'This computer is configured to receive credentials from a remote client computer.') {

                $null = Enable-WSManCredSSP -Role Server -Force -ErrorAction Stop

            }

        }

    } catch {

        Stop-Function -Message "Failed to configure remote CredSSP on $ComputerName as a server" -ErrorRecord $_

    }

}

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