Powershell – Windows 8.1 Hyper-V network adapter is set to public and won’t save as private

On EC2, you need to open port 5985, the default WinRM remoting port on your security group so that you can connect to the instance from your IP address.

On the instance in the cloud, do a:

winrm quickconfig -quiet

On your workstation:

set-item wsman:\localhost\Client\TrustedHosts -value "*" -force
Invoke-Command {Get-Service} -ComputerName <hostname> -Credential administrator

And that should get you going.

What I did to resolve this issue was to create a proxy function for Enter-PSSession that resolves the CNAME for me. This might not work in your case, depending on why you need to use the CNAME, but this works for me.

Details on proxy powershell functions: http://www.windowsitpro.com/blog/powershell-with-a-purpose-blog-36/windows-powershell/powershell-proxy-functions-141413

Full function:

function Enter-PSSession {
[CmdletBinding(DefaultParameterSetName='ComputerName')]
param(
    [Parameter(ParameterSetName='ComputerName', Mandatory=$true, Position=0, ValueFromPipeline=$true, ValueFromPipelineByPropertyName=$true)]
    [Alias('Cn')]
    [ValidateNotNullOrEmpty()]
    [string]
    ${ComputerName},

[Parameter(ParameterSetName='Session', Position=0, ValueFromPipeline=$true, ValueFromPipelineByPropertyName=$true)]
[ValidateNotNullOrEmpty()]
[System.Management.Automation.Runspaces.PSSession]
${Session},

[Parameter(ParameterSetName='Uri', Position=1, ValueFromPipelineByPropertyName=$true)]
[Alias('URI','CU')]
[ValidateNotNullOrEmpty()]
[uri]
${ConnectionUri},

[Parameter(ParameterSetName='InstanceId', ValueFromPipelineByPropertyName=$true)]
[ValidateNotNull()]
[guid]
${InstanceId},

[Parameter(ParameterSetName='Id', Position=0, ValueFromPipelineByPropertyName=$true)]
[ValidateNotNull()]
[int]
${Id},

[Parameter(ParameterSetName='Name', ValueFromPipelineByPropertyName=$true)]
[string]
${Name},

[Parameter(ParameterSetName='Uri')]
[Parameter(ParameterSetName='ComputerName')]
[switch]
${EnableNetworkAccess},

[Parameter(ParameterSetName='ComputerName', ValueFromPipelineByPropertyName=$true)]
[Parameter(ParameterSetName='Uri', ValueFromPipelineByPropertyName=$true)]
[system.management.automation.pscredential]
${Credential},

[Parameter(ParameterSetName='ComputerName')]
[ValidateRange(1, 65535)]
[int]
${Port},

[Parameter(ParameterSetName='ComputerName')]
[switch]
${UseSSL},

[Parameter(ParameterSetName='ComputerName', ValueFromPipelineByPropertyName=$true)]
[Parameter(ParameterSetName='Uri', ValueFromPipelineByPropertyName=$true)]
[string]
${ConfigurationName},

[Parameter(ParameterSetName='ComputerName', ValueFromPipelineByPropertyName=$true)]
[string]
${ApplicationName},

[Parameter(ParameterSetName='Uri')]
[switch]
${AllowRedirection},

[Parameter(ParameterSetName='Uri')]
[Parameter(ParameterSetName='ComputerName')]
[ValidateNotNull()]
[System.Management.Automation.Remoting.PSSessionOption]
${SessionOption},

[Parameter(ParameterSetName='Uri')]
[Parameter(ParameterSetName='ComputerName')]
[System.Management.Automation.Runspaces.AuthenticationMechanism]
${Authentication},

[Parameter(ParameterSetName='Uri')]
[Parameter(ParameterSetName='ComputerName')]
[string]
${CertificateThumbprint})


begin
{
    try {
        $outBuffer = $null
        if ($PSBoundParameters.TryGetValue('OutBuffer', [ref]$outBuffer))
        {
            $PSBoundParameters['OutBuffer'] = 1
        }
        $PSBoundParameters['ComputerName'] = ([System.Net.Dns]::GetHostByName($PSBoundParameters['ComputerName'])).HostName
        $wrappedCmd = $ExecutionContext.InvokeCommand.GetCommand('Microsoft.PowerShell.Core\Enter-PSSession', [System.Management.Automation.CommandTypes]::Cmdlet)
        $scriptCmd = {& $wrappedCmd @PSBoundParameters }
        $steppablePipeline = $scriptCmd.GetSteppablePipeline($myInvocation.CommandOrigin)
        $steppablePipeline.Begin($PSCmdlet)
    } catch {
        throw
    }
}

process
{
    try {
        $steppablePipeline.Process($_)
    } catch {
        throw
    }
}

end
{
    try {
        $steppablePipeline.End()
    } catch {
        throw
    }
}
<#

.ForwardHelpTargetName Enter-PSSession
.ForwardHelpCategory Cmdlet

#>

}

The only line I added was:

$PSBoundParameters['ComputerName'] = ([System.Net.Dns]::GetHostByName($PSBoundParameters['ComputerName'])).HostName

This simply resolves the CNAME to the FQDN in the proxy function before calling the native Enter-PSSession.

This allows me to set *.mydomain.local in my TrustedHosts via Group Policy, and I can still use "Enter-PSSession ShortName" or "Enter-PSSession CNAME" without having to mess with additional SPNs, etc.