diff --git a/.github/workflows/wec-listener.yml b/.github/workflows/wec-listener.yml
new file mode 100644
index 00000000..957ce27e
--- /dev/null
+++ b/.github/workflows/wec-listener.yml
@@ -0,0 +1,35 @@
+name: Reviewed exact-IP collector listener
+on:
+  push:
+    branches: ['**']
+  pull_request:
+  workflow_dispatch:
+permissions:
+  contents: read
+jobs:
+  wec-listener:
+    timeout-minutes: 15
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-2022, windows-2025]
+        engine: [powershell, pwsh]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+      - name: Native listener checkpoint in Windows PowerShell 5.1
+        if: matrix.engine == 'powershell'
+        shell: powershell
+        run: ./tests/WecListener.Checkpoint.Windows.Tests.ps1 -AllowDisposableListenerReplacement
+      - name: Native listener checkpoint in PowerShell 7
+        if: matrix.engine == 'pwsh'
+        shell: pwsh
+        run: ./tests/WecListener.Checkpoint.Windows.Tests.ps1 -AllowDisposableListenerReplacement
+      - name: Retain native listener and cleanup evidence
+        if: always()
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02
+        with:
+          name: wec-listener-${{ matrix.os }}-${{ matrix.engine }}
+          path: ${{ runner.temp }}/wela-listener-*/
+          if-no-files-found: warn
+          retention-days: 7
diff --git a/tests/WecListener.Checkpoint.Windows.Tests.ps1 b/tests/WecListener.Checkpoint.Windows.Tests.ps1
new file mode 100644
index 00000000..f357c63d
--- /dev/null
+++ b/tests/WecListener.Checkpoint.Windows.Tests.ps1
@@ -0,0 +1,60 @@
+param([switch]$AllowDisposableListenerReplacement)
+$ErrorActionPreference='Stop'
+if([Environment]::OSVersion.Platform -ne [PlatformID]::Win32NT -or -not $AllowDisposableListenerReplacement -or $env:GITHUB_ACTIONS -ne 'true' -or $env:RUNNER_ENVIRONMENT -ne 'github-hosted'){throw 'Explicit disposable GitHub-hosted Windows listener replacement opt-in required.'}
+$repo=Split-Path $PSScriptRoot -Parent;$script:ScriptRoot=$repo
+Import-Module "$repo/modules/AuditProfiles.psm1" -Force
+Import-Module "$repo/modules/WefSubscriptions.psm1" -Force
+. "$repo/scripts/Configuration.ps1"
+. "$repo/scripts/NativeChannelConfiguration.ps1"
+. "$repo/scripts/WefDeployment.ps1"
+$root=Join-Path $env:RUNNER_TEMP ('wela-listener-checkpoint-'+[guid]::NewGuid().ToString('N'));$null=New-Item -ItemType Directory $root
+function Save($Name,$Value){$Value|ConvertTo-Json -Depth 20|Set-Content -LiteralPath (Join-Path $root $Name) -Encoding UTF8}
+function ReadListeners {
+    @(Microsoft.WSMan.Management\Get-WSManInstance -ResourceURI 'winrm/config/Listener' -Enumerate -ErrorAction Stop|ForEach-Object {
+        [pscustomobject][ordered]@{Address=[string]$_.Address;Transport=[string]$_.Transport;Port=[string]$_.Port;Hostname=[string]$_.Hostname;Enabled=[string]$_.Enabled;URLPrefix=[string]$_.URLPrefix;CertificateThumbprint=[string]$_.CertificateThumbprint;ListeningOn=@($_.ListeningOn|ForEach-Object {[string]$_}|Sort-Object);RawXml=$_.OuterXml}
+    }|Sort-Object Address,Transport)
+}
+function Key($Value){ConvertTo-Json -InputObject @($Value|Select-Object Address,Transport,Port,Hostname,Enabled,URLPrefix,CertificateThumbprint,ListeningOn) -Depth 10 -Compress}
+function ReadServices {@(Get-CimInstance Win32_Service -Filter "Name='WinRM' OR Name='Wecsvc' OR Name='MpsSvc' OR Name='BFE'"|Sort-Object Name|Select-Object Name,StartMode,State)}
+function ReadFirewall {@(NetSecurity\Get-NetFirewallRule -PolicyStore ActiveStore|Sort-Object Name|Select-Object Name,Enabled,Profile,Direction,Action,PolicyStoreSourceType)}
+$services=ReadServices;$firewall=ReadFirewall;$original=$null;$removed=@();$created=$false;$failure=$null;$cleanupErrors=@();$count=0
+function Assert($Value,$Message){if(-not $Value){throw $Message};$script:count++}
+try {
+    $os=Get-CimInstance Win32_OperatingSystem;Assert ($os.BuildNumber -in @('20348','26100') -and $os.ProductType -eq 3) 'Standalone Server 2022/2025 fixture required.'
+    $s=@($services|Where-Object Name -eq 'WinRM');Assert ($s.Count -eq 1 -and $s[0].StartMode -in @('Auto','Manual') -and $s[0].State -in @('Running','Stopped')) 'Stable non-disabled WinRM required.'
+    if($s[0].State -ne 'Running'){Start-Service WinRM -ErrorAction Stop}
+    $original=ReadListeners;Save 'listeners-original.json' $original;Save 'services-original.json' $services;Save 'firewall-original.json' $firewall
+    # Replacement is a fixture-only, disposable-VM operation. Product must refuse overlaps.
+    foreach($listener in @($original|Where-Object Transport -eq 'HTTP')){
+        Assert ($listener.Port -eq '5985' -and $listener.URLPrefix -eq 'wsman' -and $listener.Enabled -in @('true','false') -and -not $listener.CertificateThumbprint -and $listener.RawXml -notmatch 'Source="GPO"') 'Only ordinary local HTTP fixture listeners can be temporarily replaced.'
+        Microsoft.WSMan.Management\Remove-WSManInstance -ResourceURI 'winrm/config/Listener' -SelectorSet @{Address=$listener.Address;Transport='HTTP'} -ErrorAction Stop
+        $removed+=$listener
+    }
+    $ip=@(NetTCPIP\Get-NetIPAddress -AddressFamily IPv4|Where-Object {$_.AddressState -eq 'Preferred' -and $_.IPAddress -notmatch '^(127\.|169\.254\.|0\.)'}|Sort-Object IPAddress|Select-Object -First 1).IPAddress
+    Assert ([bool]$ip) 'An assigned preferred IPv4 address is required.';$selector=@{Address='IP:'+$ip;Transport='HTTP'}
+    $values=@{Port='5985';Hostname='';Enabled='true';URLPrefix='wsman';CertificateThumbprint=''}
+    Save 'selection.json' @{Selector=$selector;Values=$values}
+    $created=$true
+    $result=Microsoft.WSMan.Management\New-WSManInstance -ResourceURI 'winrm/config/Listener' -SelectorSet $selector -ValueSet $values -ErrorAction Stop
+    Save 'native-create.json' @{Xml=$result.OuterXml}
+    $after=ReadListeners;Save 'listeners-created.json' $after;$chosen=@($after|Where-Object {$_.Address -ceq $selector.Address -and $_.Transport -ceq 'HTTP'})
+    Assert ($chosen.Count -eq 1) 'Exactly one assigned-IP listener must exist.'
+    Assert ($chosen[0].Port -ceq '5985' -and $chosen[0].Enabled -ceq 'true' -and $chosen[0].URLPrefix -ceq 'wsman' -and -not $chosen[0].CertificateThumbprint -and -not $chosen[0].Hostname) 'Every fixed listener property must match.'
+    Assert ($chosen[0].ListeningOn.Count -eq 1 -and $chosen[0].ListeningOn[0] -ceq $ip) 'Actual ListeningOn must contain exactly the selected IPv4 address.'
+    $duplicateRejected=$false;$duplicateError=''
+    try {$null=Microsoft.WSMan.Management\New-WSManInstance -ResourceURI 'winrm/config/Listener' -SelectorSet $selector -ValueSet $values -ErrorAction Stop}catch{$duplicateRejected=$true;$duplicateError=$_.ToString()}
+    Save 'collision.json' @{Rejected=$duplicateRejected;Diagnostic=$duplicateError};Assert $duplicateRejected 'Windows must reject creating the same listener selector twice.'
+    Assert ((Key (ReadListeners)) -ceq (Key $after)) 'Rejected collision must preserve the listener definition.'
+    $prereq=@(Get-WelaWefCollectorPrerequisites ([pscustomobject]@{CollectorFqdn='fixture.invalid';ListenerAddress=$selector.Address;IngressRuleName='WELA-checkpoint-does-not-exist';IngressLocalAddresses=@($ip);IngressRemoteAddresses=@('192.0.2.0/24')}))
+    Save 'collector-prerequisite.json' $prereq;$field=@($prereq|Where-Object Name -eq 'Existing matching HTTP listener');Assert ($field.Count -eq 1 -and $field[0].Verified) 'Existing collector prerequisite must recognize the actual exact-IP listener.'
+    Write-Host "PASS: $count native listener checkpoint assertions. No WEF delivery proof."
+}catch{$failure=$_.ToString();Write-Host $failure;throw}finally{
+    if($created){try {Microsoft.WSMan.Management\Remove-WSManInstance -ResourceURI 'winrm/config/Listener' -SelectorSet $selector -ErrorAction Stop}catch{$cleanupErrors+=$_.ToString()}}
+    foreach($listener in $removed){try {$null=Microsoft.WSMan.Management\New-WSManInstance -ResourceURI 'winrm/config/Listener' -SelectorSet @{Address=$listener.Address;Transport=$listener.Transport} -ValueSet @{Port=$listener.Port;Hostname=$listener.Hostname;Enabled=$listener.Enabled;URLPrefix=$listener.URLPrefix;CertificateThumbprint=$listener.CertificateThumbprint} -ErrorAction Stop}catch{$cleanupErrors+=$_.ToString()}}
+    $restored=$null;$listenersOk=$false;$firewallOk=$false;$servicesOk=$false
+    try {$restored=ReadListeners;Save 'listeners-restored.json' $restored;$listenersOk=$null -ne $original -and (Key $original) -ceq (Key $restored)}catch{$cleanupErrors+=$_.ToString()}
+    try {if(@($services|Where-Object Name -eq 'WinRM')[0].State -eq 'Stopped'){Stop-Service WinRM -ErrorAction Stop};$endServices=ReadServices;Save 'services-restored.json' $endServices;$servicesOk=($services|ConvertTo-Json -Compress) -ceq ($endServices|ConvertTo-Json -Compress)}catch{$cleanupErrors+=$_.ToString()}
+    try {$endFirewall=ReadFirewall;Save 'firewall-restored.json' $endFirewall;$firewallOk=($firewall|ConvertTo-Json -Compress) -ceq ($endFirewall|ConvertTo-Json -Compress)}catch{$cleanupErrors+=$_.ToString()}
+    Save 'cleanup.json' @{Failure=$failure;CleanupErrors=$cleanupErrors;ListenersRestored=$listenersOk;ServicesRestored=$servicesOk;FirewallPreserved=$firewallOk;Complete=($listenersOk -and $servicesOk -and $firewallOk -and -not $cleanupErrors.Count);DisposableBoundary='Fixture temporarily replaced ordinary original HTTP listeners and restored their captured configuration; product creation must refuse overlap.'}
+    if(-not $listenersOk -or -not $servicesOk -or -not $firewallOk -or $cleanupErrors.Count){throw 'Native checkpoint cleanup incomplete; inspect retained artifacts.'}
+}