We needed to update the SNMP configuration script to take parameters so that we could pass this through CloudForms, our cloud management platform. Below you’ll find the PowerShell script that we came up with.

#Usage ./2012_configure_snmp.ps1 -ro ro123123 -rw rw123433 -ips 10.0.0.1,10.0.0.2,10.124.1.3
param (
    [string]$ro,
    [string]$rw,
    [string[]]$ips,
    [string]$location
 )

#$sysLocation = $location
Start-Transcript -path C:\windows\temp\snmp_output.txt -append
$managers = $ips

$sysContact = "EMSC eNOC"

#Configure SNMP Regigstry Keys
        Write-Host "Setting SNMP sysServices"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\RFC1156Agent" /v sysServices /t REG_DWORD /d 79 /f | Out-Null
        Write-Host "Setting SNMP sysLocation"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\RFC1156Agent" /v sysLocation /t REG_SZ /d $Location /f | Out-Null
        Write-Host "Setting SNMP sysContact"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\RFC1156Agent" /v sysContact /t REG_SZ /d $sysContact /f | Out-Null
        Write-Host "Setting SNMP Community Regkey"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\TrapConfiguration" /f | Out-Null
        Write-Host "Setting read only SNMP Community Regkey"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\TrapConfiguration\$ro" /f | Out-Null
        Write-Host "Setting read write SNMP Community Regkey"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\TrapConfiguration\$rw" /f | Out-Null
        Write-Host "Adding readonly SNMP Trap Communities"
#Loop Through Read Only SNMP Communities
        Write-Host "Adding readonly SNMP Trap Communities"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\ValidCommunities" /v $ro /t REG_DWORD /d 4 /f | Out-Null
#Loop Through RW SNMP Communities
        Write-Host "Adding read wrtie SNMP Trap Communities"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\ValidCommunities" /v $rw /t REG_DWORD /d 8 /f | Out-Null
        Write-Host "Creating SNMP Extension Agents RegKey"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\ExtensionAgents" /f | Out-Null
        Write-Host "Creating SNMP SNMP Service Parameters RegKey"
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters" /v NameResolutionRetries /t REG_DWORD /d 10 /f | Out-Null
        reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters" /v EnableAuthenticationTraps /t REG_DWORD /d 0 /f | Out-Null
#Loop through permitted SNMP management systems
        Write-Host "Adding Permitted Managers"
        $i = 1
        Foreach ($Manager in $Managers){
            reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\PermittedManagers" /v $i /t REG_SZ /d $manager /f | Out-Null
            reg add ("HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SNMP\Parameters\TrapConfiguration\" + $String) /v $i /t REG_SZ /d $manager /f | Out-Null
            $i++
        }
stop-transcript