Test Port Connectivity required for FIM/MIM Active Directory Management Agent. Associated blogpost https://blog.darrenjrobinson.com/diagnosing-fimmim-kerberos-no-logon-server-error-on-an-active-directory-management-agent/

TestMIMADMAPorts.ps1

# Insert Test-Port Function here from https://gallery.technet.microsoft.com/scriptcenter/97119ed6-6fb2-446d-98d8-32d823867131 

# UDP Ports to probe
$udpports = @()
$udpports += "464" #Kerberos
$udpports += "3268" #GC
$udpports += "3269" #GC

# TCP Ports to probe
$ports = @()
$ports += "389" #LDAP
$ports += "636" #LDAPS
$ports += "88" #Kerberos
$ports += "464" #Kerberos
$ports += "53" #DNS
$ports += "3268" #GC
$ports += "3269" #GC
$ports += "135" #RPC

# Hosts to probe
$targethosts = @()
$targethosts += "corporateforest.com.au"
$targethosts += "consumerforest.com.au"
$targethosts += "externalforest.com.au"

$summary = $null 

# Do it
foreach ($target in $targethosts){
    $targetDetails = Test-Netconnection $target -WarningAction SilentlyContinue
    $report = @{}
    $report.add("Target",$targetDetails.ComputerName)
    write-host "Target" $targetDetails.ComputerName
    $report.add("Target Address",$targetDetails.RemoteAddress)
     write-host "Target Address" $targetDetails.RemoteAddress

    foreach ($port in $ports){
        $response = Test-Netconnection $target -Port $port -WarningAction SilentlyContinue
        $report.add("TCP Port $port",$response.TcpTestSucceeded)
        if ($response.TcpTestSucceeded -eq $False){write-host "TCP Port $port",$response.TcpTestSucceeded -foregroundcolor "magenta" -backgroundcolor "yellow"}
        if ($response.TcpTestSucceeded -eq $True){write-host "TCP Port $port",$response.TcpTestSucceeded}
    }

    foreach ($udpport in $udpports){
        $udpresponse = Test-Port -computer $target -port $udpport -UDP -WarningVariable $null 
        $report.add("UDP Port $udpport",$udpresponse.Open) 
        if ($udpresponse.Open -eq $False){write-host "UDP Port $udpport",$udpresponse.Open -foregroundcolor "magenta" -backgroundcolor "yellow"}
        if ($udpresponse.Open -eq $True){write-host "UDP Port $udpport",$udpresponse.Open }
    }

    $output = $report.GetEnumerator() | Sort Name 
    #$output 
    $summary += $output 
}

$summary 

The Test-Port function lives here - https://www.powershellgallery.com/packages/powerworks/0.0.17.55/Content/Public%5CTest-Port.ps1