IPv6 must be disabled until a deliberate transition strategy has been implemented.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-14262	5.050	SV-32488r2_rule	ECSC-1	Medium

Description
Any nodes’ interface with IPv6 enabled by default presents a potential risk of traffic being transmitted or received without proper risk mitigation strategy and is, therefore, a serious security concern.

STIG	Date
Windows Server 2008 R2 Member Server Security Technical Implementation Guide	2015-03-09

Details

Check Text ( C-58013r2_chk )
Prior to transition, IPv6 will be disabled on all interfaces. 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\Tcpip6\Parameters\ Value Name: DisabledComponents Type: REG_DWORD Value: 0xff or 0xffffffff Microsoft updated article 929852 with regard to disabling all IPv6 components, changing the value to 0xff. A value of 0xffffffff results in a 5-second delay in system startup. However, either value can be used to disable all IPv6 components. Documentable: If disabling IPv6 on all interfaces prior to the transition to supporting IPv6 causes issues with necessary applications or services, document this with the IAO.

Check Text ( C-58013r2_chk )

Prior to transition, IPv6 will be disabled on all interfaces. 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\Tcpip6\Parameters\

Value Name: DisabledComponents

Type: REG_DWORD
Value: 0xff or 0xffffffff

Microsoft updated article 929852 with regard to disabling all IPv6 components, changing the value to 0xff. A value of 0xffffffff results in a 5-second delay in system startup. However, either value can be used to disable all IPv6 components.

Documentable: If disabling IPv6 on all interfaces prior to the transition to supporting IPv6 causes issues with necessary applications or services, document this with the IAO.

Fix Text (F-62375r2_fix)
To disable IPv6 on all interfaces, configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\ Value Name: DisabledComponents Type: REG_DWORD Value: 0xff or 0xffffffff Microsoft updated article 929852 with regard to disabling all IPv6 components, changing the value to 0xff. A value of 0xffffffff results in a 5-second delay in system startup. However, either value can be used to disable all IPv6 components.

Fix Text (F-62375r2_fix)

To disable IPv6 on all interfaces, configure the following registry value:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\

Value Name: DisabledComponents

Type: REG_DWORD
Value: 0xff or 0xffffffff

Microsoft updated article 929852 with regard to disabling all IPv6 components, changing the value to 0xff. A value of 0xffffffff results in a 5-second delay in system startup. However, either value can be used to disable all IPv6 components.