{"id":255892,"date":"2024-05-17T11:44:57","date_gmt":"2024-05-17T11:44:57","guid":{"rendered":"https:\/\/www.ninjaone.com\/?post_type=script_hub&p=255892"},"modified":"2024-05-17T11:44:57","modified_gmt":"2024-05-17T11:44:57","slug":"almacenamiento-local-de-hashes-lm","status":"publish","type":"script_hub","link":"https:\/\/www.ninjaone.com\/es\/script-hub\/almacenamiento-local-de-hashes-lm\/","title":{"rendered":"C\u00f3mo configurar eficazmente el almacenamiento local de hashes LM con PowerShell"},"content":{"rendered":"

Configurar el almacenamiento local de hashes LM<\/strong> desempe\u00f1a un papel fundamental en los sistemas basados en Windows. Para los profesionales de TI, la configuraci\u00f3n de este almacenamiento puede afectar en gran medida a la seguridad del sistema. El script PowerShell proporcionado simplifica notablemente el proceso de activar o desactivar esta funci\u00f3n. Profundicemos en su significado y su funcionamiento.<\/p>\n

Antecedentes<\/h2>\n

El hash LM, o hash de administrador de LAN, existe desde hace alg\u00fan tiempo y es conocido por sus vulnerabilidades. Con el tiempo, muchos profesionales de la seguridad han recomendado desactivar los hashes LM para reforzar la seguridad del sistema. Sin embargo, las configuraciones manuales pueden resultar tediosas, por lo que las herramientas y los scripts, como el que analizamos en este post, se convierten en activos de valor incalculable para los profesionales de TI y los proveedores de servicios gestionados (MSP).<\/a><\/p>\n

El script para configurar el almacenamiento local de hashes LM<\/h2>\n
#Requires -Version 5.1\r\n\r\n<#\r\n.SYNOPSIS\r\n    Disable or Enable Local LM Hash Storage\r\n.DESCRIPTION\r\n    Disable or Enable Local LM Hash Storage\r\n.EXAMPLE\r\n    -Enable\r\n    Enable Local LM Hash Storage\r\n.EXAMPLE\r\n    -Disable\r\n    Disable Local LM Hash Storage\r\n.EXAMPLE\r\n    PS C:> Disable-LMHash.ps1 -Disable\r\n    Disable Local LM Hash Storage\r\n.OUTPUTS\r\n    None\r\n.NOTES\r\n    Minimum OS Architecture Supported: Windows 10, Windows Server 2016\r\n    Release Notes:\r\n    Initial Release\r\nBy using this script, you indicate your acceptance of the following legal terms as well as our Terms of Use at https:\/\/www.ninjaone.com\/terms-of-use.\r\n    Ownership Rights: NinjaOne owns and will continue to own all right, title, and interest in and to the script (including the copyright). NinjaOne is giving you a limited license to use the script in accordance with these legal terms. \r\n    Use Limitation: You may only use the script for your legitimate personal or internal business purposes, and you may not share the script with another party. \r\n    Republication Prohibition: Under no circumstances are you permitted to re-publish the script in any script library or website belonging to or under the control of any other software provider. \r\n    Warranty Disclaimer: The script is provided \u201cas is\u201d and \u201cas available\u201d, without warranty of any kind. NinjaOne makes no promise or guarantee that the script will be free from defects or that it will meet your specific needs or expectations. \r\n    Assumption of Risk: Your use of the script is at your own risk. You acknowledge that there are certain inherent risks in using the script, and you understand and assume each of those risks. \r\n    Waiver and Release: You will not hold NinjaOne responsible for any adverse or unintended consequences resulting from your use of the script, and you waive any legal or equitable rights or remedies you may have against NinjaOne relating to your use of the script. \r\n    EULA: If you are a NinjaOne customer, your use of the script is subject to the End User License Agreement applicable to you (EULA).\r\n.COMPONENT\r\n    ProtocolSecurity\r\n#>\r\n\r\n[CmdletBinding(DefaultParameterSetName = \"Disable\")]\r\nparam (\r\n    [Parameter(Mandatory, ParameterSetName = \"Disable\")]\r\n    [switch]\r\n    $Disable,\r\n    [Parameter(Mandatory, ParameterSetName = \"Enable\")]\r\n    [switch]\r\n    $Enable\r\n)\r\n\r\nbegin {\r\n    function Test-IsElevated {\r\n        $id = [System.Security.Principal.WindowsIdentity]::GetCurrent()\r\n        $p = New-Object System.Security.Principal.WindowsPrincipal($id)\r\n        if ($p.IsInRole([System.Security.Principal.WindowsBuiltInRole]::Administrator))\r\n        { Write-Output $true }\r\n        else\r\n        { Write-Output $false }\r\n    }\r\n    function Set-ItemProp {\r\n        param (\r\n            $Path,\r\n            $Name,\r\n            $Value,\r\n            [ValidateSet(\"DWord\", \"QWord\", \"String\", \"ExpandedString\", \"Binary\", \"MultiString\", \"Unknown\")]\r\n            $PropertyType = \"DWord\"\r\n        )\r\n        New-Item -Path $Path -Force -ErrorAction SilentlyContinue | Out-Null\r\n        if ((Get-ItemProperty -Path $Path -Name $Name -ErrorAction SilentlyContinue)) {\r\n            Set-ItemProperty -Path $Path -Name $Name -Value $Value -Force -Confirm:$false | Out-Null\r\n        }\r\n        else {\r\n            New-ItemProperty -Path $Path -Name $Name -Value $Value -PropertyType $PropertyType -Force -Confirm:$false | Out-Null\r\n        }\r\n    }\r\n}\r\nprocess {\r\n    if (-not (Test-IsElevated)) {\r\n        Write-Error -Message \"Access Denied. Please run with Administrator privileges.\"\r\n        exit 1\r\n    }\r\n    $Path = \"HKLM:SYSTEMCurrentControlSetControlLsa\"\r\n    $Name = \"NoLMHash\"\r\n    $Value = if ($Enable) { 1 }elseif ($Disable) { 0 }else { throw \"No Param used.\" }\r\n    # Sets NoLMHash to 1\r\n    try {\r\n        Set-ItemProp -Path $Path -Name $Name -Value $Value\r\n    }\r\n    catch {\r\n        Write-Error $_\r\n        exit 1\r\n    }\r\n    Write-Host \"Set $Path$Name to $Value\"\r\n}\r\nend {}<\/pre>\n
 <\/p>\n\n
Accede a m\u00e1s de 300 scripts en el Dojo de NinjaOne<\/p>\n
Obt\u00e9n acceso<\/a><\/p>\n<\/div>\n
An\u00e1lisis detallado<\/h2>\n
El script comienza estableciendo los requisitos para la versi\u00f3n 5.1 de PowerShell. Aqu\u00ed tienes un desglose paso a paso de su funcionamiento:<\/p>\n