Set-SslSecurityPolicy.ps1

function Set-SslSecurityPolicy {
<#
.SYNOPSIS
Configures the certificate handling in ServicePointManager
 
.DESCRIPTION
Configures the certificate handling in ServicePointManager
 
You can set different options and modify how the .NET ServicePointManager
should handle validation and trusting X.509 SSL/TLS certificates.
 
.EXAMPLE
PS > Set-SslSecurityPolicy -ServerCertificateValidationCallback
 
Sets the ServerCertificateValidationCallback return value to $true, which
effectively disables all certificate validation checks.
 
.EXAMPLE
PS > Set-SslSecurityPolicy -CheckCertificateRevocationList
 
Disables checks for revoked certificates. Useful in combination with
'ServerCertificateValidationCallback'.
 
.LINK
Online Version: http://dfch.biz/biz/dfch/PS/System/Utilities/Set-SslSecurityPolicy/
 
.NOTES
See module manifest for required software versions and dependencies at:
http://dfch.biz/biz/dfch/PS/System/Utilities/biz.dfch.PS.System.Utilities.psd1/
#>


[CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High',
    HelpURI = 'http://dfch.biz/biz/dfch/PS/System/Utilities/Set-SslSecurityPolicy/'
)]

Param
(
    [Parameter(Mandatory = $false)]
    [switch] $CheckCertificateRevocationList = $false
    ,
    [Parameter(Mandatory = $false)]
    [switch] $ServerCertificateValidationCallback = $true
    ,
    [Parameter(Mandatory = $false)]
    [Alias("TrustAllCertificates")]
    [switch] $TrustAllCertificatesViaObsoleteICertificatePolicy = $false
)

    if(!$PSCmdlet.ShouldProcess("Disabling X.509 SSL/TLS certificate validation")) 
    {
        return;
    }

    if($TrustAllCertificatesViaObsoleteICertificatePolicy) 
    {
Add-Type @"
    using System.Net;
    using System.Security.Cryptography.X509Certificates;
    public class TrustAllCertificatesPolicy : ICertificatePolicy
    {
       public bool CheckValidationResult
       (
            ServicePoint srvPoint,
            X509Certificate certificate,
            WebRequest request,
            int certificateProblem
        )
        {
            return true;
        }
    }
"@

        [System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertificatesPolicy;
    }
    
    if(!$CheckCertificateRevocationList) 
    {
        [System.Net.ServicePointManager]::CheckCertificateRevocationList = $false;
    }
    
    if($ServerCertificateValidationCallback) 
    {
Add-Type @"
    using System;
    using System.Net;
    using System.Net.Security;
    using System.Security.Cryptography.X509Certificates;
    public class ServerCertificateValidationCallback
    {
        public static void Ignore()
        {
            ServicePointManager.ServerCertificateValidationCallback +=
                delegate
                (
                    Object obj,
                    X509Certificate certificate,
                    X509Chain chain,
                    SslPolicyErrors errors
                )
                {
                    return true;
                };
        }
    }
"@

        [ServerCertificateValidationCallback]::Ignore();
    }

} # function

if($MyInvocation.ScriptName) { Export-ModuleMember -Function Set-SslSecurityPolicy; } 

#
# Copyright 2015-2016 d-fens GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

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