The 'Core Networking - Dynamic Host Configuration Protocol (DHCPV6-In)' Windows Firewall rule should be configured correctly. (1) Enabled\Not Enabled (2) Allow the connection\Allow the connection if it is secure(Allow the connection if it is authenticated and integrity-protected\Require the connection to be encrypted\Allow the computers to dynamically negotiate encryption\Allow the connection to use null encapsulation\Override block rules)\Block the connection (3) List of authorized computers (4) List of computer exceptions (5) List of local IP address that limit the scope (6) List of remote IP address that limit the scope (7) Profiles: Domain\Private\Public (8) All interface types\These interface types (Local area network/Remote access\Wireless) (9) Block edge traversal\Allow edge traversal\Defer to user\Defer to application (10) List of authorized users (11) List of user exceptions (1) GPO: Computer Configuration\Windows Settings\Security Settings\Windows Firewall with Advanced Security\Windows Firewall with Advanced Security\Inbound Rules\Core Networking - Dynamic Host Configuration Protocol (DHCPV6-In) (2) Registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsFirewall\FirewallRules\CoreNet-DHCPV6-In domain_profile_Core_Networking_DHCPV6_In oval:gov.nist.USGCB.win7firewall:def:20941 domain_profile_Core_Networking_DHCPV6_In oval:gov.nist.USGCB.win7firewall:def:20941 oval:gov.nist.USGCB.win7firewall:def:20941 Microsoft TechNet and other Microsoft online documentation and resources Microsoft HTML USGCB: Guidance for Securing Microsoft Windows 7 Systems for IT Professional (XCCDF Benchmark) 2010-08-31 USGCB: Guidance for Securing Microsoft Windows 7 Systems for IT Professional (XCCDF Benchmark) NIST XCCDF USGCB: Guidance for Securing Microsoft Windows 7 Systems for IT Professional (OVAL Definitions) NIST OVAL SCAP Repo OVAL Definition 2012-04-13