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【Server and Domain Isolation Using IPsec and Group Policy】
http://www.microsoft.com/downloads/details.aspx?FamilyID=404fb62f-7cf7-48b5-a820-b881f63bc005&DisplayLang=en
Brief Description
This guide provides business-oriented justification as well as technical guidance for logically isolating servers and domains from certain types of network traffic through the use of IPsec filters and Group Policy.