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The system must be configured to prevent IP source routing.


Overview

Finding ID Version Rule ID IA Controls Severity
V-4110 WN08-SO-000038 SV-48122r1_rule ECSC-1 Low
Description
Configuring the system to disable IP source routing protects against spoofing.
STIG Date
Windows 8 Security Technical Implementation Guide 2014-01-07

Details

Check Text ( C-44848r1_chk )
Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.)
Expand the Security Configuration and Analysis tree view.
Navigate to Local Policies -> Security Options.

(See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

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", 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 (F-41259r1_fix)
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".