474 APPENDIX C Windows Server 2008 R2 Delta Changes SECURITY CHANGES Windows Server 2008 R2 introduces new features to help ensure your net- work is more secure and protected. These new features include additions to existing services and entire new applications and roles. In this section, we will discuss some of the security enhancements offered by the R2 release of Windows Server 2008. DNSSEC support As previously mentioned in this chapter, Windows Server 2008 R2 pro- vides support for the standards-based DNSSEC. This technology is not proprietary to Microsoft and is being adopted by many DNS solution prov- iders. DNSSEC helps ensure DNS zones are more secure by offering pub- lic/private key signing of zones to help prevent man-in-the-middle attacks. AppLocker AppLocker is a new feature available in Windows Server 2008 R2 and