Windows/Powershell

Allow Remote Powershell

Server

Enable PSRemoting

On the server you'll be accessing

PS> Enable-PSRemoting -Force      #suppresses user prompts and enables.
PS> Enable-PSRemoting -SkipNetworkProfileCheck -Force      #enables even on public networks.

Enable Windows Remote Management (WinRM)

You will also probably have to enable WinRM (windows remote management)

# Set start mode to automatic
PS> Set-Service WinRM -StartMode Automatic

# Verify start mode and state - it should be running
PS> Get-WmiObject -Class win32_service | Where-Object {$_.name -like "WinRM"}

# or verify it with this
PS> Get-Service -Name "WinRM"

# Start/Stop service
PS> Start-Service -Name "WinRM"
PS> Stop-Service -Name "WinRM"

Trusted Hosts List

You may also need to add the client that will be connecting to the trusted hosts list.

PS> Set-Item WSMan:\localhost\Client\TrustedHosts -Value "FQDN" -Force    #Adds an individual host.  Overwrites previous entry.
PS> Set-Item WSMan:\localhost\Client\TrustedHosts -Value "*" -Force      #Adds everything to the trusted host list.

PS> Get-Item WSMan:\localhost\Client\TrustedHosts


   WSManConfig: Microsoft.WSMan.Management\WSMan::localhost\Client

Type            Name                           SourceOfValue   Value                                                  
----            ----                           -------------   -----                                                  
System.String   TrustedHosts                                   *  

Add to existing

If you want to add to the existing list without overwriting, you can either create an array out of the existing values, or use the -Concatenate switch.

PS> $curList = (Get-Item WSMan:\localhost\Client\TrustedHosts).value
PS> Set-Item WSMan:\localhost\Client\TrustedHosts -Value "$curList, FQDN"

PS> Set-Item WSMan:\localhost\Client\TrustedHosts -Concatenate -Value FQDN

Test Connectivity

PS> Test-WSMan -ComputerName {ServerFQDN} -Credential {ServerFQDN/Domain}\{User} -Authentication Default
ie. PS> Test-WSMan -ComputerName win-45mo0eqvg4g -Credential win-45mo0eqvg4g\Administrator -Authentication Default

Client

Trusted Hosts

From the Client you need add the server to the Trusted Hosts.
NOTE: While you do NOT need WinRM to be running on the client, you do need to start it in order to manipulate the trusted host list.

PS> PS> Start-Service -Name "WinRM"

PS> Set-Item WSMan:\localhost\Client\TrustedHosts -Value "FQDN" -Force    #Adds an individual host.  Overwrites previous entry.
PS> Set-Item WSMan:\localhost\Client\TrustedHosts -Value "*" -Force      #Adds everything to the trusted host list.

PS> Get-Item WSMan:\localhost\Client\TrustedHosts


   WSManConfig: Microsoft.WSMan.Management\WSMan::localhost\Client

Type            Name                           SourceOfValue   Value                                                  
----            ----                           -------------   -----                                                  
System.String   TrustedHosts                                   *  

PS> Stop-Service -Name "WinRM"

Test Connectivity

PS> Test-WSMan -ComputerName {ServerFQDN} -Credential {ServerFQDN/Domain}\{User} -Authentication Default
ie. PS> Test-WSMan -ComputerName win-45mo0eqvg4g -Credential win-45mo0eqvg4g\Administrator -Authentication Default

Sessions/Invoke Command

To run remote powershell commands, you'll need to either specify the computer name or create a session and specify that.

#Without a Session, unique one-liner
PS> Invoke-Command -ComputerName win-45mo0eqvg4g -Credential win-45mo0eqvg4g\Administrator -ScriptBlock {HostName}
WIN-45MO0EQVG4G

#With a session
PS> New-PSSession -ComputerName win-45mo0eqvg4g -Credential win-45mo0eqvg4g\Administrator

 Id Name            ComputerName    ComputerType    State         ConfigurationName     Availability
 -- ----            ------------    ------------    -----         -----------------     ------------
  6 WinRM6          win-45mo0eqvg4g RemoteMachine   Opened        Microsoft.PowerShell     Available

PS> Invoke-Command -Session (Get-PSSession) -ScriptBlock {Hostname}
WIN-45MO0EQVG4G

New/Disconnect/Remove

The process should be to Create a NEW session > DISCONNECT the session (but leaves in history) > REMOVE the session (removes from history).

PS> New-PSSession -ComputerName win-45mo0eqvg4g -Credential win-45mo0eqvg4g\Administrator
PS> Disconnect-PSSession (Get-PSSession)
PS> Remove-PSSession (Get-PSSession)