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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-14262	5.050	SV-32488r1_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 Domain Controller Security Technical Implementation Guide	2014-06-27

Details

Check Text ( C-34144r1_chk )
Prior to transition, IPv6 will be disabled on all interfaces. If the following registry value doesn’t exist or is not configured as specified, then this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Subkey: System\CurrentControlSet\Services\Tcpip6\Parameters Value Name: DisabledComponents Type: REG_DWORD Value: 0xffffffff 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-34144r1_chk )

Prior to transition, IPv6 will be disabled on all interfaces. If the following registry value doesn’t exist or is not configured as specified, then this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Subkey: System\CurrentControlSet\Services\Tcpip6\Parameters

Value Name: DisabledComponents

Type: REG_DWORD
Value: 0xffffffff

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-29834r1_fix)
To disable IPv6 on all interfaces, configure the following registry key: Registry Hive: HKEY_LOCAL_MACHINE Subkey: System\CurrentControlSet\Services\Tcpip6\Parameters Value Name: DisabledComponents Type: REG_DWORD Value: 0xffffffff