enable-snmp by powershell script

enable-snmp.ps1

# Install SNMP Feature
Install-WindowsFeature SNMP-Service -IncludeAllSubFeature -IncludeManagementTools

# Setting SNMP Service Start Automatic 
Set-Service -Name SNMP -StartupType Automatic
Set-Service -Name SNMPTRAP -StartupType Automatic
Start-Service -Name SNMP
Start-Service -Name SNMPTRAP

# Seting SNMP Community (ex. public)
New-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\ValidCommunities" -Name "public" -PropertyType DWord -Value 4 -Force

# Create Key PermittedManagers (Allow All)
New-Item -Path "HKLM:\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\PermittedManagers" -Force

# Add Firewall Rule for SNMP UDP Port 161
if (-not (Get-NetFirewallRule -DisplayName "Allow SNMP UDP 161" -ErrorAction SilentlyContinue)) {
    New-NetFirewallRule -DisplayName "Allow SNMP UDP 161" `
        -Direction Inbound `
        -Protocol UDP `
        -LocalPort 161 `
        -Action Allow `
        -Profile Any `
        -Enabled True
}