The system is configured to detect and configure default gateway addresses.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-4112	3.104	SV-25071r1_rule		Low

Description
Enables or disables the Internet Router Discovery Protocol (IRDP) used to detect and configure default gateway addresses on the computer.

STIG	Date
Windows 7 Security Technical Implementation Guide	2017-02-21

Details

Check Text ( C-321r1_chk )
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: (PerformRouterDiscovery) Allow IRDP to detect and configure Default Gateway addresses (could lead to DoS)” is not set to “Disabled”, then this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Subkey: \System\CurrentControlSet\Services\Tcpip\Parameters\ Value Name: PerformRouterDiscovery Value Type: REG_DWORD Value: 0

Check Text ( C-321r1_chk )

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: (PerformRouterDiscovery) Allow IRDP to detect and configure Default Gateway addresses (could lead to DoS)” is not set to “Disabled”, then this is a finding.

Registry Hive: HKEY_LOCAL_MACHINE
Subkey: \System\CurrentControlSet\Services\Tcpip\Parameters\

Value Name: PerformRouterDiscovery

Value Type: REG_DWORD
Value: 0

Fix Text (F-5730r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “MSS: (PerformRouterDiscovery) Allow IRDP to detect and configure Default Gateway addresses (could lead to DoS)” to “Disabled”.