xFirewallProfile.ps1

Enum Enabled {
    True
    False
}

Enum Action {
    Allow
    Block
    NotConfigured
}

[DscResource()]
class ClassFirewallProfile {
    
    [DscProperty(Key)]
    [string]$Name

    [DscProperty(Mandatory)]
    [Enabled]$Enabled

    [DscProperty(Mandatory)]
    [Action]$DefaultInboundAction

    [DscProperty(Mandatory)]
    [Action]$DefaultOutboundAction

    [ClassFirewallProfile] Get() {
    
        $p = Get-NetFirewallProfile -Name $this.Name -ErrorAction SilentlyContinue

        $r = @{
    		Name = [String]$p.Name
	    	Enabled = [String]$p.Enabled
            DefaultInboundAction = [String]$p.DefaultInboundAction
            DefaultOutboundAction = [String]$p.DefaultOutboundAction
	    }

        return $r
    }

    [void] Set() {

        Write-verbose "Changing firewall profile $($this.Name)"
        
        Set-NetFirewallProfile -Enabled "$($this.Enabled)"`
                            -Name "$($this.Name)"`
                            -DefaultInboundAction "$($this.DefaultInboundAction)"`
                            -DefaultOutboundAction "$($this.DefaultOutboundAction)"

        Write-Verbose -Message "Successfully set the firewall profile $($this.Name)"
    }

    [bool] Test() {

        $p = Get-NetFirewallProfile -Name $this.Name -ErrorAction SilentlyContinue
        
        $bool = $true

        if(($this.Enabled) -ne ($p.Enabled).ToString()) {
            Write-Verbose "Firewall profile $($this.Name) is not $($this.Enabled)"
            $bool =  $false
        }

        if($this.DefaultInboundAction -ne ($p.DefaultInboundAction).ToString()) {
            Write-Verbose ("Firewall profile {0} DefaultInboundAction is not {1} but is set to {2}" -f $($this.Name),
            $($this.DefaultInboundAction),$($p.DefaultInboundAction))
            $bool =  $false
        }

        if($this.DefaultOutboundAction -ne ($p.DefaultOutboundAction).ToString()) {
            Write-Verbose ("Firewall profile {0} DefaultOutboundAction is not {1} but is set to {2}" -f $($this.Name),
            $($this.DefaultOutboundAction),$($p.DefaultOutboundAction))
            $bool =  $false
        }

        return $bool
    }
}