IPv6 source routing will be configured to highest protection.

From Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide

Associated with: CCI-000366

SV-32449r1_rule IPv6 source routing will be configured to highest protection.

Vulnerability discussion

This check verifies Windows is configured to protect against IPv6 packet spoofing.

Check content

Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for “MSS: (DisableIPSourceRouting IPv6) IP source routing protection level (protects against packet spoofing)” is not set to “Highest protection, source routing is completely disabled”, then this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Subkey: \System\CurrentControlSet\Services\Tcpip6\Parameters\ Value Name: DisableIpSourceRouting Type: REG_DWORD Value: 2

Fix text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “MSS: (DisableIPSourceRouting IPv6) IP source routing protection level (protects against packet spoofing)” to “Highest protection, source routing is completely disabled”.

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