Is there a PowerShell equivalent tracert that works in version 2?
Fixed a few bugs in " Mid-Waged-Mans-Tracert" Version, modularized it, and added some customization pieces. @MrPaulch had a great PoC.
function Invoke-Traceroute{
[CmdletBinding()]
Param(
[Parameter(Mandatory=$true,Position=1)]
[string]$Destination,
[Parameter(Mandatory=$false)]
[int]$MaxTTL=16,
[Parameter(Mandatory=$false)]
[bool]$Fragmentation=$false,
[Parameter(Mandatory=$false)]
[bool]$VerboseOutput=$true,
[Parameter(Mandatory=$false)]
[int]$Timeout=5000
)
$ping = new-object System.Net.NetworkInformation.Ping
$success = [System.Net.NetworkInformation.IPStatus]::Success
$results = @()
if($VerboseOutput){Write-Host "Tracing to $Destination"}
for ($i=1; $i -le $MaxTTL; $i++) {
$popt = new-object System.Net.NetworkInformation.PingOptions($i, $Fragmentation)
$reply = $ping.Send($Destination, $Timeout, [System.Text.Encoding]::Default.GetBytes("MESSAGE"), $popt)
$addr = $reply.Address
try{$dns = [System.Net.Dns]::GetHostByAddress($addr)}
catch{$dns = "-"}
$name = $dns.HostName
$obj = New-Object -TypeName PSObject
$obj | Add-Member -MemberType NoteProperty -Name hop -Value $i
$obj | Add-Member -MemberType NoteProperty -Name address -Value $addr
$obj | Add-Member -MemberType NoteProperty -Name dns_name -Value $name
$obj | Add-Member -MemberType NoteProperty -Name latency -Value $reply.RoundTripTime
if($VerboseOutput){Write-Host "Hop: $i`t= $addr`t($name)"}
$results += $obj
if($reply.Status -eq $success){break}
}
Return $results
}
As mentioned in the comment, you can make your own "poor-mans-PowerShell-tracert" by parsing the output from tracert.exe
:
function Invoke-Tracert {
param([string]$RemoteHost)
tracert $RemoteHost |ForEach-Object{
if($_.Trim() -match "Tracing route to .*") {
Write-Host $_ -ForegroundColor Green
} elseif ($_.Trim() -match "^\d{1,2}\s+") {
$n,$a1,$a2,$a3,$target,$null = $_.Trim()-split"\s{2,}"
$Properties = @{
Hop = $n;
First = $a1;
Second = $a2;
Third = $a3;
Node = $target
}
New-Object psobject -Property $Properties
}
}
}
By default, powershell formats objects with 5 or more properties in a list, but you can get a tracert
-like output with Format-Table
:
I must admit I wanted to see whether someone already did this.
You can use the .Net Framework to implement a not-so-poor-mans-traceroute as a Powershell Script
Here a primer, that works fast, but dangerous. Also, no statistics.
#
# Mid-Waged-Mans-Tracert
#
$ping = new-object System.Net.NetworkInformation.Ping
$timeout = 5000
$maxttl = 64
$address = [string]$args
$message = [System.Text.Encoding]::Default.GetBytes("MESSAGE")
$dontfragment = false
$success = [System.Net.NetworkInformation.IPStatus]::Success
echo "Tracing $address"
for ($ttl=1;$i -le $maxttl; $ttl++) {
$popt = new-object System.Net.NetworkInformation.PingOptions($ttl, $dontfragment)
$reply = $ping.Send($address, $timeout, $message, $popt)
$addr = $reply.Address
$rtt = $reply.RoundtripTime
try {
$dns = [System.Net.Dns]::GetHostByAddress($addr)
} catch {
$dns = "-"
}
$name = $dns.HostName
echo "Hop: $ttl`t= $addr`t($name)"
if($reply.Status -eq $success) {break}
}
Edit:
Removed some of the danger by adding a catch statement. The only danger that is still present is the fact that we only send a single request per hop, which could mean that we don't reach a hop due to a innocent package drop. Resolving that issue remains a readers exercise. Hint: (Think of loops within loops)
Bonus: We now attempt to get the dns entry of each hop!