The 6to4 IPv6 transition technology will be disabled.

From Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide

Associated with: CCI-000381

SV-33685r1_rule The 6to4 IPv6 transition technology will be disabled.

Vulnerability discussion

IPv6 transition technologies which tunnel packets through other protocols do not provide visibility.

Check content

If the following registry value doesn’t exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Subkey: \Software\Policies\Microsoft\Windows\TCPIP\v6Transition\ Value Name: 6to4_State Type: REG_SZ Value: Disabled

Fix text

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> TCPIP Settings -> IPv6 Transition Technologies -> “6to4 State” to “Enabled: Disabled State”.

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