MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds
Vérifié avec Microsoft Security Baseline (MSS / SecGuide) 25H2 — mis à jour le 30 juillet 2026
Pris en charge sur : Au minimum Windows Vista
Chemin dans la console GPO
Configuration ordinateur\Modèles d'administration\MSS (Legacy) Description
MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds
Registre
HKLM
System\CurrentControlSet\Services\Tcpip\Parameters MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_KeepAliveTime Documentation Microsoft Learn Données de correspondance : Microsoft Learn (CC BY 4.0)
Générateur d'exports
BETAConfigurez l'état, la portée et les options, puis générez les sorties .reg, PowerShell, Intune et SCCM — ou ajoutez le paramètre à une collection multi-paramètres.
Ces exports écrivent le registre — ce n'est pas une GPO managée. ⓘ
Fichier .reg
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds
; State: Enabled
; Supported on: Au minimum Windows Vista
[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters]
"KeepAliveTime"=dword:000493e0Autres formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds
# State: Enabled
# Supported on: Au minimum Windows Vista
$path = 'HKLM:\System\CurrentControlSet\Services\Tcpip\Parameters'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'KeepAliveTime' -Value 300000 -Type DWordIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_KeepAliveTime
Data type: String
Value:
<enabled/>
<data id="KeepAliveTime" value="300000"/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds
# State: Enabled
# Supported on: Au minimum Windows Vista
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\System\CurrentControlSet\Services\Tcpip\Parameters' -Name 'KeepAliveTime' -Expected 300000 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds
# State: Enabled
# Supported on: Au minimum Windows Vista
$path = 'HKLM:\System\CurrentControlSet\Services\Tcpip\Parameters'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'KeepAliveTime' -Value 300000 -Type DWordScripts SCCM
# Exported from gporais.com
# Policy: MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds
# State: Enabled
# Supported on: Au minimum Windows Vista
# SCCM Configuration Item guidance:
# Create a Configuration Item of type "Setting: Script".
# Discovery script: use the Detection script below.
# Remediation script: use the Remediation script below.
# Compliance rule: the Discovery script output equals 'Compliant'.
# === Detection script ===
# Exported from gporais.com
# Policy: MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds
# State: Enabled
# Supported on: Au minimum Windows Vista
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\System\CurrentControlSet\Services\Tcpip\Parameters' -Name 'KeepAliveTime' -Expected 300000 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds
# State: Enabled
# Supported on: Au minimum Windows Vista
$path = 'HKLM:\System\CurrentControlSet\Services\Tcpip\Parameters'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'KeepAliveTime' -Value 300000 -Type DWordVous construisez une collection multi-paramètres ? Ajoutez ce paramètre et générez des exports combinés (.reg, PowerShell, GPO).