The system must be configured to prevent IP source routing.

From Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide

Associated with: CCI-000366

SV-52924r1_rule The system must be configured to prevent IP source routing.

Vulnerability discussion

Configuring the system to disable IP source routing protects against spoofing.

Check content

If the following registry value does not exist or is not configured as specified, this is a finding: 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". (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

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