Windows Server 2019 source routing must be configured to the highest protection level to prevent Internet Protocol (IP) source routing.
An XCCDF Rule
Description
Configuring the system to disable IP source routing protects against spoofing.
- ID
- SV-205859r991589_rule
- Version
- WN19-CC-000040
- Severity
- Low
- References
- Updated
Remediation Templates
A Manual Procedure
Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> "MSS: (DisableIPSourceRouting) IP source routing protection level (protects against packet spoofing)" to "Enabled" with "Highest protection, source routing is completely disabled" selected.
This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and "MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.