# encoding: ascii
# api: powershell
# title: Async Ping Sweep
# description: This function lets you sends ICMP echo request packets (“pings”) to a range of IPv4 addresses using an asynchronous method.
# version: 0.1
# type: function
# author: AlphaSun
# license: CC0
# function: New-Range
# x-poshcode-id: 6294
# x-archived: 2016-04-12T00:43:30
# x-published: 2016-04-08T20:33:00
#
# Therefore this technique is very fast but comes with a warning. Ping sweeping a large subnet or network with many switches may result in a peak of broadcast traffic. Use the -Interval parameter to adjust the time between each ping request. For example, an interval of 60 milliseconds is suitable for wireless networks. The RawOutput parameter switches the output to an unformated [System.Net.NetworkInformation.PingReply[]].
# Written by: gaff-jakobs
# https://social.technet.microsoft.com/profile/gaff-jakobs/
#
function Global:Ping-IPRange {
<#
.SYNOPSIS
Sends ICMP echo request packets to a range of IPv4 addresses between two given addresses.
.DESCRIPTION
This function lets you sends ICMP echo request packets ("pings") to
a range of IPv4 addresses using an asynchronous method.
Therefore this technique is very fast but comes with a warning.
Ping sweeping a large subnet or network with many switches may result in
a peak of broadcast traffic.
Use the -Interval parameter to adjust the time between each ping request.
For example, an interval of 60 milliseconds is suitable for wireless networks.
The RawOutput parameter switches the output to an unformated
[System.Net.NetworkInformation.PingReply[]].
.INPUTS
None
You cannot pipe input to this function.
.OUTPUTS
The function only returns output from successful pings.
Type: System.Net.NetworkInformation.PingReply
The RawOutput parameter switches the output to an unformated
[System.Net.NetworkInformation.PingReply[]].
.NOTES
Author : G.A.F.F. Jakobs
Created : August 30, 2014
Version : 6
.EXAMPLE
Ping-IPRange -StartAddress 192.168.1.1 -EndAddress 192.168.1.254 -Interval 20
IPAddress Bytes Ttl ResponseTime
--------- ----- --- ------------
192.168.1.41 32 64 371
192.168.1.57 32 128 0
192.168.1.64 32 128 1
192.168.1.63 32 64 88
192.168.1.254 32 64 0
In this example all the ip addresses between 192.168.1.1 and 192.168.1.254 are pinged using
a 20 millisecond interval between each request.
All the addresses that reply the ping request are listed.
.LINK
http://gallery.technet.microsoft.com/Fast-asynchronous-ping-IP-d0a5cf0e
#>
[CmdletBinding(ConfirmImpact='Low')]
Param(
[parameter(Mandatory = $true, Position = 0)]
[System.Net.IPAddress]$StartAddress,
[parameter(Mandatory = $true, Position = 1)]
[System.Net.IPAddress]$EndAddress,
[int]$Interval = 30,
[Switch]$RawOutput = $false
)
$timeout = 2000
function New-Range ($start, $end) {
[byte[]]$BySt = $start.GetAddressBytes()
[Array]::Reverse($BySt)
[byte[]]$ByEn = $end.GetAddressBytes()
[Array]::Reverse($ByEn)
$i1 = [System.BitConverter]::ToUInt32($BySt,0)
$i2 = [System.BitConverter]::ToUInt32($ByEn,0)
for($x = $i1;$x -le $i2;$x++){
$ip = ([System.Net.IPAddress]$x).GetAddressBytes()
[Array]::Reverse($ip)
[System.Net.IPAddress]::Parse($($ip -join '.'))
}
}
$IPrange = New-Range $StartAddress $EndAddress
$IpTotal = $IPrange.Count
Get-Event -SourceIdentifier "ID-Ping*" | Remove-Event
Get-EventSubscriber -SourceIdentifier "ID-Ping*" | Unregister-Event
$IPrange | foreach{
[string]$VarName = "Ping_" + $_.Address
New-Variable -Name $VarName -Value (New-Object System.Net.NetworkInformation.Ping)
Register-ObjectEvent -InputObject (Get-Variable $VarName -ValueOnly) -EventName PingCompleted -SourceIdentifier "ID-$VarName"
(Get-Variable $VarName -ValueOnly).SendAsync($_,$timeout,$VarName)
Remove-Variable $VarName
try{
$pending = (Get-Event -SourceIdentifier "ID-Ping*").Count
}catch [System.InvalidOperationException]{}
$index = [array]::indexof($IPrange,$_)
Write-Progress -Activity "Sending ping to" -Id 1 -status $_.IPAddressToString -PercentComplete (($index / $IpTotal) * 100)
Write-Progress -Activity "ICMP requests pending" -Id 2 -ParentId 1 -Status ($index - $pending) -PercentComplete (($index - $pending)/$IpTotal * 100)
Start-Sleep -Milliseconds $Interval
}
Write-Progress -Activity "Done sending ping requests" -Id 1 -Status 'Waiting' -PercentComplete 100
While($pending -lt $IpTotal){
Wait-Event -SourceIdentifier "ID-Ping*" | Out-Null
Start-Sleep -Milliseconds 10
$pending = (Get-Event -SourceIdentifier "ID-Ping*").Count
Write-Progress -Activity "ICMP requests pending" -Id 2 -ParentId 1 -Status ($IpTotal - $pending) -PercentComplete (($IpTotal - $pending)/$IpTotal * 100)
}
if($RawOutput){
$Reply = Get-Event -SourceIdentifier "ID-Ping*" | ForEach {
If($_.SourceEventArgs.Reply.Status -eq "Success"){
$_.SourceEventArgs.Reply
}
Unregister-Event $_.SourceIdentifier
Remove-Event $_.SourceIdentifier
}
}else{
$Reply = Get-Event -SourceIdentifier "ID-Ping*" | ForEach {
If($_.SourceEventArgs.Reply.Status -eq "Success"){
$_.SourceEventArgs.Reply | select @{
Name="IPAddress" ; Expression={$_.Address}},
@{Name="Bytes" ; Expression={$_.Buffer.Length}},
@{Name="Ttl" ; Expression={$_.Options.Ttl}},
@{Name="ResponseTime"; Expression={$_.RoundtripTime}}
}
Unregister-Event $_.SourceIdentifier
Remove-Event $_.SourceIdentifier
}
}
if($Reply -eq $Null){
Write-Verbose "Ping-IPrange : No ip address responded" -Verbose
}
return $Reply
}