Alekhya Jupudi e96d997442 CSP -02 : Windows 11 matrix update
Updated the tables with Windows 11 and converted images into text respectively
2021-09-28 12:40:04 +05:30

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---
title: Policy CSP - MSSLegacy
description: Learn how Policy CSP - MSSLegacy, an ADMX-backed policy, requires a special SyncML format to enable or disable.
ms.author: dansimp
ms.topic: article
ms.prod: w10
ms.technology: windows
author: manikadhiman
ms.localizationpriority: medium
ms.date: 09/27/2019
ms.reviewer:
manager: dansimp
---
# Policy CSP - MSSLegacy
<hr/>
<!--Policies-->
## MSSLegacy policies
<dl>
<dd>
<a href="#msslegacy-allowicmpredirectstooverrideospfgeneratedroutes">MSSLegacy/AllowICMPRedirectsToOverrideOSPFGeneratedRoutes</a>
</dd>
<dd>
<a href="#msslegacy-allowthecomputertoignorenetbiosnamereleaserequestsexceptfromwinsservers">MSSLegacy/AllowTheComputerToIgnoreNetBIOSNameReleaseRequestsExceptFromWINSServers</a>
</dd>
<dd>
<a href="#msslegacy-ipsourceroutingprotectionlevel">MSSLegacy/IPSourceRoutingProtectionLevel</a>
</dd>
<dd>
<a href="#msslegacy-ipv6sourceroutingprotectionlevel">MSSLegacy/IPv6SourceRoutingProtectionLevel</a>
</dd>
</dl>
> [!TIP]
> These are ADMX-backed policies and require a special SyncML format to enable or disable. For details, see [Understanding ADMX-backed policies](./understanding-admx-backed-policies.md).
>
> You must specify the data type in the SyncML as &lt;Format&gt;chr&lt;/Format&gt;. For an example SyncML, refer to [Enabling a policy](./understanding-admx-backed-policies.md#enabling-a-policy).
>
> The payload of the SyncML must be XML-encoded; for this XML encoding, there are a variety of online encoders that you can use. To avoid encoding the payload, you can use CDATA if your MDM supports it. For more information, see [CDATA Sections](http://www.w3.org/TR/REC-xml/#sec-cdata-sect).
<hr/>
<!--Policy-->
<a href="" id="msslegacy-allowicmpredirectstooverrideospfgeneratedroutes"></a>**MSSLegacy/AllowICMPRedirectsToOverrideOSPFGeneratedRoutes**
<!--SupportedSKUs-->
<table>
<tr>
<th>Edition</th>
<th>Windows 10</th>
<th>Windows 11</th>
</tr>
<tr>
<td>Home</td>
<td>No</td>
<td>No</td>
</tr>
<tr>
<td>Pro</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Business</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Enterprise</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Education</td>
<td>Yes</td>
<td>Yes</td>
</tr>
</table>
<!--/SupportedSKUs-->
<hr/>
<!--Scope-->
[Scope](./policy-configuration-service-provider.md#policy-scope):
> [!div class = "checklist"]
> * Device
<hr/>
<!--/Scope-->
<!--Description-->
<!--/Description-->
<!--ADMXBacked-->
ADMX Info:
- GP name: *Pol_MSS_EnableICMPRedirect*
- GP ADMX file name: *mss-legacy.admx*
<!--/ADMXBacked-->
<!--/Policy-->
<hr/>
<!--Policy-->
<a href="" id="msslegacy-allowthecomputertoignorenetbiosnamereleaserequestsexceptfromwinsservers"></a>**MSSLegacy/AllowTheComputerToIgnoreNetBIOSNameReleaseRequestsExceptFromWINSServers**
<!--SupportedSKUs-->
<table>
<tr>
<th>Edition</th>
<th>Windows 10</th>
<th>Windows 11</th>
</tr>
<tr>
<td>Home</td>
<td>No</td>
<td>No</td>
</tr>
<tr>
<td>Pro</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Business</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Enterprise</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Education</td>
<td>Yes</td>
<td>Yes</td>
</tr>
</table>
<!--/SupportedSKUs-->
<hr/>
<!--Scope-->
[Scope](./policy-configuration-service-provider.md#policy-scope):
> [!div class = "checklist"]
> * Device
<hr/>
<!--/Scope-->
<!--Description-->
<!--/Description-->
<!--ADMXBacked-->
ADMX Info:
- GP name: *Pol_MSS_NoNameReleaseOnDemand*
- GP ADMX file name: *mss-legacy.admx*
<!--/ADMXBacked-->
<!--/Policy-->
<hr/>
<!--Policy-->
<a href="" id="msslegacy-ipsourceroutingprotectionlevel"></a>**MSSLegacy/IPSourceRoutingProtectionLevel**
<!--SupportedSKUs-->
<table>
<tr>
<th>Edition</th>
<th>Windows 10</th>
<th>Windows 11</th>
</tr>
<tr>
<td>Home</td>
<td>No</td>
<td>No</td>
</tr>
<tr>
<td>Pro</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Business</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Enterprise</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Education</td>
<td>Yes</td>
<td>Yes</td>
</tr>
</table>
<!--/SupportedSKUs-->
<hr/>
<!--Scope-->
[Scope](./policy-configuration-service-provider.md#policy-scope):
> [!div class = "checklist"]
> * Device
<hr/>
<!--/Scope-->
<!--Description-->
<!--/Description-->
<!--ADMXBacked-->
ADMX Info:
- GP name: *Pol_MSS_DisableIPSourceRouting*
- GP ADMX file name: *mss-legacy.admx*
<!--/ADMXBacked-->
<!--/Policy-->
<hr/>
<!--Policy-->
<a href="" id="msslegacy-ipv6sourceroutingprotectionlevel"></a>**MSSLegacy/IPv6SourceRoutingProtectionLevel**
<!--SupportedSKUs-->
<table>
<tr>
<th>Edition</th>
<th>Windows 10</th>
<th>Windows 11</th>
</tr>
<tr>
<td>Home</td>
<td>No</td>
<td>No</td>
</tr>
<tr>
<td>Pro</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Business</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Enterprise</td>
<td>Yes</td>
<td>Yes</td>
</tr>
<tr>
<td>Education</td>
<td>Yes</td>
<td>Yes</td>
</tr>
</table>
<!--/SupportedSKUs-->
<hr/>
<!--Scope-->
[Scope](./policy-configuration-service-provider.md#policy-scope):
> [!div class = "checklist"]
> * Device
<hr/>
<!--/Scope-->
<!--Description-->
<!--/Description-->
<!--ADMXBacked-->
ADMX Info:
- GP name: *Pol_MSS_DisableIPSourceRoutingIPv6*
- GP ADMX file name: *mss-legacy.admx*
<!--/ADMXBacked-->
<!--/Policy-->
<hr/>
<!--/Policies-->