Private/AddWinRMTrustLocalHost.ps1

function AddWinRMTrustLocalHost {
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory=$False)]
        [string]$NewRemoteHost = "localhost"
    )

    # Make sure WinRM in Enabled and Running on $env:ComputerName
    try {
        $null = Enable-PSRemoting -Force -ErrorAction Stop
    }
    catch {
        if ($PSVersionTable.PSEdition -eq "Core") {
            Import-WinModule NetConnection
        }

        $NICsWPublicProfile = @(Get-NetConnectionProfile | Where-Object {$_.NetworkCategory -eq 0})
        if ($NICsWPublicProfile.Count -gt 0) {
            foreach ($Nic in $NICsWPublicProfile) {
                Set-NetConnectionProfile -InterfaceIndex $Nic.InterfaceIndex -NetworkCategory 'Private'
            }
        }

        try {
            $null = Enable-PSRemoting -Force
        }
        catch {
            Write-Error $_
            Write-Error "Problem with Enable-PSRemoting WinRM Quick Config! Halting!"
            $global:FunctionResult = "1"
            return
        }
    }

    # If $env:ComputerName is not part of a Domain, we need to add this registry entry to make sure WinRM works as expected
    if (!$(Get-CimInstance Win32_Computersystem).PartOfDomain) {
        $null = reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v LocalAccountTokenFilterPolicy /t REG_DWORD /d 1 /f
    }

    # Add the New Server's IP Addresses to $env:ComputerName's TrustedHosts
    $CurrentTrustedHosts = $(Get-Item WSMan:\localhost\Client\TrustedHosts).Value
    [System.Collections.ArrayList][array]$CurrentTrustedHostsAsArray = $CurrentTrustedHosts -split ','

    $HostsToAddToWSMANTrustedHosts = @($NewRemoteHost)
    foreach ($HostItem in $HostsToAddToWSMANTrustedHosts) {
        if ($CurrentTrustedHostsAsArray -notcontains $HostItem) {
            $null = $CurrentTrustedHostsAsArray.Add($HostItem)
        }
        else {
            Write-Warning "Current WinRM Trusted Hosts Config already includes $HostItem"
            return
        }
    }
    $UpdatedTrustedHostsString = $($CurrentTrustedHostsAsArray | Where-Object {![string]::IsNullOrWhiteSpace($_)}) -join ','
    Set-Item WSMan:\localhost\Client\TrustedHosts $UpdatedTrustedHostsString -Force
}

# SIG # Begin signature block
# MIIM3gYJKoZIhvcNAQcCoIIMzzCCDMsCAQExCzAJBgUrDgMCGgUAMGkGCisGAQQB
# gjcCAQSgWzBZMDQGCisGAQQBgjcCAR4wJgIDAQAABBAfzDtgWUsITrck0sYpfvNR
# AgEAAgEAAgEAAgEAAgEAMCEwCQYFKw4DAhoFAAQUgJPfoQv6PBa8VE2dwjhQaovv
# x+igggpPMIIEKTCCAxGgAwIBAgITRAAAAALGGh0rrvpIiwAAAAAAAjANBgkqhkiG
# 9w0BAQsFADBAMRMwEQYKCZImiZPyLGQBGRYDbGFiMRUwEwYKCZImiZPyLGQBGRYF
# YWxwaGExEjAQBgNVBAMTCUFscGhhREMwMTAeFw0xODExMDYxNTQ2MjhaFw0yMDEx
# MDYxNTU2MjhaMEExEzARBgoJkiaJk/IsZAEZFgNsYWIxFTATBgoJkiaJk/IsZAEZ
# FgVhbHBoYTETMBEGA1UEAxMKQWxwaGFTdWJDQTCCASIwDQYJKoZIhvcNAQEBBQAD
# ggEPADCCAQoCggEBAJ0yJxQZZ7jXPnBuOefihL0ehpBF1zoZpcM30pWneQA/kk9w
# ByX9ISyKWTABstiIu8b2g6lKUjZBM8AOcLPSjl1ZMQkh+qaSQbJFVNeNYllGpjd1
# oOYvSPtr9iPpghVkAFWw9IdOgnd/4XDd4NqlddyR4Qb0g7v3+AMYrqhQCk2VzELp
# 215LEO9sy1EMy7+B29B6P43Rp7ljA9Wc4Hnl+onviFWcIxmIhd0yGdobSxOSDgv5
# SUBfwk+DW03Y9pmJJHCU9hXFFVsPnrfBEvicGrkYx0vA+/O+jh5otex4eR+Tt7eB
# 5VhrfdHKbEkZnBwrJOVz3rURZIu3BsDFSfwNd70CAwEAAaOCARkwggEVMBAGCSsG
# AQQBgjcVAQQDAgEAMB0GA1UdDgQWBBRWBfwwFO+72Ebloy7rHmHnxX3k5DAZBgkr
# BgEEAYI3FAIEDB4KAFMAdQBiAEMAQTAOBgNVHQ8BAf8EBAMCAYYwDwYDVR0TAQH/
# BAUwAwEB/zAfBgNVHSMEGDAWgBTq79v4G/Vf91c0y+vSJBWEI/vmDTA8BgNVHR8E
# NTAzMDGgL6AthitodHRwOi8vcGtpLmFscGhhLmxhYi9jZXJ0ZGF0YS9BbHBoYURD
# MDEuY3JsMEcGCCsGAQUFBwEBBDswOTA3BggrBgEFBQcwAoYraHR0cDovL3BraS5h
# bHBoYS5sYWIvY2VydGRhdGEvQWxwaGFEQzAxLmNydDANBgkqhkiG9w0BAQsFAAOC
# AQEAoE9hHZ0Y5M5tC15cnxVNJa/ILfwRmwCxzPyOAUrdBu4jbSHF2vRsKIJAXFs4
# +mwXqXpLYSUbXF5tfB86OKs2f9L7soln3BXJHj3eEs27htf7RJK1JjPtO8rs3pdn
# h7TbDO3nyjkTcywJioScFZUTdIsQj7TBm3HIQ+/ZSdIWMHlQnYV2kW13XqUZnLhv
# PRjy1NMBG1BAxUrc4bMi1X+mVxoYb/tiB59jakd95wi7ICi2H/07dXoDpi+kAQA1
# ki1/U+cuDhuH7Q8hegt64MlmKD01rO5HODVujuIG1+M5ZkGDeLNKksPHcSJ/DBSn
# KjZca16Sn9No2kLq1q9gD8X/wzCCBh4wggUGoAMCAQICE3AAAAAHhXSIXehTWisA
# AAAAAAcwDQYJKoZIhvcNAQELBQAwQTETMBEGCgmSJomT8ixkARkWA2xhYjEVMBMG
# CgmSJomT8ixkARkWBWFscGhhMRMwEQYDVQQDEwpBbHBoYVN1YkNBMB4XDTE4MTEw
# NzAzMTQyMFoXDTE5MTEwNzAzMTQyMFowTzETMBEGCgmSJomT8ixkARkWA2xhYjEV
# MBMGCgmSJomT8ixkARkWBWFscGhhMQ4wDAYDVQQDEwVVc2VyczERMA8GA1UEAxMI
# YWxwaGFkZXYwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCMUGwGv3p0
# prkDmSUQphU6UvIFQ57NxJFUOSmMZ7SY/nYNDy0iTN26eD0S5J8AQE8B/IGLHUno
# tKFl2AUcQ31hpaSLE1YkThR3WZ4SFUaBMUgKKLc/RQKqE0iNbAfh53N/nnGs6jyu
# 47kyuFRwWE2tZee6b5hh0dbT7YZnahLO7cLWErU4ikWWjEA98TcMK1gaNa5ThBn1
# +4bo9wuxjRKIGpkUJBP/1gq8qeSJnfNelZ34lD0EEirj7/YTzL5YkHMSXTuFMozw
# Av4lXUW/qZ1pAT9rKBalQETxBv9SuC31hU/2EiB4EYYqVFLHglFRogLd7nFZhqa/
# 2O+WdW2LsW9lAgMBAAGjggL/MIIC+zAOBgNVHQ8BAf8EBAMCB4AwHQYDVR0OBBYE
# FMy71rz8tJOXdsGvBt6SIVSKUlrkMB8GA1UdIwQYMBaAFFYF/DAU77vYRuWjLuse
# YefFfeTkMIH3BgNVHR8Ege8wgewwgemggeaggeOGgbJsZGFwOi8vL0NOPUFscGhh
# U3ViQ0EsQ049QWxwaGFTdWJDQSxDTj1DRFAsQ049UHVibGljJTIwS2V5JTIwU2Vy
# dmljZXMsQ049U2VydmljZXMsQ049Q29uZmlndXJhdGlvbixEQz1hbHBoYSxEQz1s
# YWI/Y2VydGlmaWNhdGVSZXZvY2F0aW9uTGlzdD9iYXNlP29iamVjdENsYXNzPWNS
# TERpc3RyaWJ1dGlvblBvaW50hixodHRwOi8vcGtpLmFscGhhLmxhYi9jZXJ0ZGF0
# YS9BbHBoYVN1YkNBLmNybDCB9AYIKwYBBQUHAQEEgecwgeQwgacGCCsGAQUFBzAC
# hoGabGRhcDovLy9DTj1BbHBoYVN1YkNBLENOPUFJQSxDTj1QdWJsaWMlMjBLZXkl
# MjBTZXJ2aWNlcyxDTj1TZXJ2aWNlcyxDTj1Db25maWd1cmF0aW9uLERDPWFscGhh
# LERDPWxhYj9jQUNlcnRpZmljYXRlP2Jhc2U/b2JqZWN0Q2xhc3M9Y2VydGlmaWNh
# dGlvbkF1dGhvcml0eTA4BggrBgEFBQcwAoYsaHR0cDovL3BraS5hbHBoYS5sYWIv
# Y2VydGRhdGEvQWxwaGFTdWJDQS5jcnQwPQYJKwYBBAGCNxUHBDAwLgYmKwYBBAGC
# NxUIhLycPIHG3hyBiYk0hLvpfobokGRgg9+kPoHDslgCAWQCAQIwHwYDVR0lBBgw
# FgYKKwYBBAGCNwoDDAYIKwYBBQUHAwMwKQYJKwYBBAGCNxUKBBwwGjAMBgorBgEE
# AYI3CgMMMAoGCCsGAQUFBwMDMC0GA1UdEQQmMCSgIgYKKwYBBAGCNxQCA6AUDBJh
# bHBoYWRldkBhbHBoYS5sYWIwDQYJKoZIhvcNAQELBQADggEBAIhV0GPEvq5KwIs+
# DTqLsqHcojMyJhJwrZkEim2XAJfNQFkiDrZzism7lOyXYJol6Bjz1txhos7P194+
# VyBdEZ/Q+r94hrq6SFgC2gCAReDZiy50Au/hTv958QNX/O0OFdIGBxavLqBrWbwu
# yH+RtE9E4LICSPPd0dM/5XE0xtqDMjZcl3pVkqgHpv3O3zgtsTW+FWr4b9lq3rCO
# HxsBGU1w7Eh0LLK8MLqioecr/4B1rPTJkcASXWMU5bllQgQvUmlKW0GIfhC9aM4J
# 04MeJOU1mHLjDcxwWpDD670AFmGRg/mMPxMywvY0HLUszWikcXNYxF1ph+LhlLI9
# f9R1qqkxggH5MIIB9QIBATBYMEExEzARBgoJkiaJk/IsZAEZFgNsYWIxFTATBgoJ
# kiaJk/IsZAEZFgVhbHBoYTETMBEGA1UEAxMKQWxwaGFTdWJDQQITcAAAAAeFdIhd
# 6FNaKwAAAAAABzAJBgUrDgMCGgUAoHgwGAYKKwYBBAGCNwIBDDEKMAigAoAAoQKA
# ADAZBgkqhkiG9w0BCQMxDAYKKwYBBAGCNwIBBDAcBgorBgEEAYI3AgELMQ4wDAYK
# KwYBBAGCNwIBFTAjBgkqhkiG9w0BCQQxFgQUR9sZIYyPpB8bl61b86wGHfoXv3Yw
# DQYJKoZIhvcNAQEBBQAEggEAY7wT4xeatE4P9y9ny3VXhmwlb7IEp2qjitwDmFeT
# rzycJzFFjMQ3uKqOcQ0lXbLvHnVZXKGYlOVpIA44Ip+8JMiG6zyxUJ72EBeOcKLx
# 2yfF8W7zD//zMfJ4HuRxJXmyCrJf4D4vNsclNVnKbhFCwcK6YjVTgBsSavBqM7xO
# JR2A/hn1gistHaC9V6EXnMf4Gnvye1atOepljV1fLMpf+gmXUsGdE/mz+Z4PvCJk
# SdqHS2BmjUEo2tCZOQZtZF7mRyQp+RfQx8+v8M7L98Un8zOQ9FAO+G65sYQplYL1
# rkfAU83DcdCXUIoJK0NwFW0LxqEEatdTYhQup7ZcSW1mkA==
# SIG # End signature block