Set-HostFirewallDefaultPolicy

VMware: Sets the default policy for the specified host firewall

Script

#Requires -Version 5.1
#Requires -Modules VMware.VimAutomation.Core
[CmdletBinding()]
Param(
    [Parameter(Mandatory = $true)]
    [string]$VIServer,
    [Parameter(Mandatory = $true)]
    [pscredential]$VICredential,
    [Parameter(Mandatory = $true)]
    [string]$HostName,
    [bool]$AllowOutgoing = $true,
    [bool]$AllowIncoming = $true
)
Process {
    $vmServer = $null
    try {
        $vmServer = Connect-VIServer -Server $VIServer -Credential $VICredential -ErrorAction Stop
        $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
        $vmHost = Get-VMHost -Server $vmServer -Name $HostName -ErrorAction Stop
        $defPolicy = Get-VMHostFirewallDefaultPolicy -Server $vmServer -VMHost $vmHost -ErrorAction Stop
        $output = $defPolicy | Select-Object *
        if ($PSBoundParameters.ContainsKey('AllowIncoming')) {
            $output = Set-VMHostFirewallDefaultPolicy -Policy $defPolicy -AllowIncoming $AllowIncoming -Confirm:$false -ErrorAction Stop | Select-Object *
        }
        if ($PSBoundParameters.ContainsKey('AllowOutgoing')) {
            $output = Set-VMHostFirewallDefaultPolicy -Policy $defPolicy -AllowOutgoing $AllowOutgoing -Confirm:$false -ErrorAction Stop | Select-Object *
        }
        foreach ($item in $output) {
            $item | Add-Member -NotePropertyName 'Timestamp' -NotePropertyValue $timestamp -Force
            Write-Output $item
        }
    }
    catch { throw }
    finally { if ($null -ne $vmServer) { Disconnect-VIServer -Server $vmServer -Force -Confirm:$false -ErrorAction SilentlyContinue } }
}

Customize

VIServer string

IP address or DNS name of the vSphere server

VICredential pscredential

PSCredential object for authenticating with the server

HostName string

Name of the host whose firewall default policy to modify

AllowOutgoing bool

If $true, all outgoing connections are allowed

AllowIncoming bool

If $true, all incoming connections are allowed