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The 6to4 IPv6 transition technology must be disabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-26575 WN12-CC-000007 SV-52970r1_rule Medium
Description
IPv6 transition technologies, which tunnel packets through other protocols, do not provide visibility.
STIG Date
Windows Server 2012/2012 R2 Member Server Security Technical Implementation Guide 2020-06-16

Details

Check Text ( C-47276r1_chk )
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: \Software\Policies\Microsoft\Windows\TCPIP\v6Transition\

Value Name: 6to4_State

Type: REG_SZ
Value: Disabled
Fix Text (F-45896r1_fix)
Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> TCPIP Settings -> IPv6 Transition Technologies -> "Set 6to4 State" to "Enabled: Disabled State".