The system is configured to allow IP source routing.

From Windows 2008 Domain Controller Security Technical Implementation Guide

Part of Disable IP Source Routing

Associated with: CCI-000366

SV-29361r1_rule The system is configured to allow IP source routing.

Vulnerability discussion

Protects against IP source routing 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) 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 Registry Path: \System\CurrentControlSet\Services\Tcpip\Parameters\ Value Name: DisableIPSourceRouting Value Type: REG_DWORD Value: 2

Fix text

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

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