TAILIEUCHUNG - Windows Vista Network Attack Surface Analysis: A Broad Overview

Note that we have made an effort to discover public sources that may document or otherwise describe the new technologies in Windows Vista. In some cases, however, we may have overlooked these sources or new sources may have been published since this paper was written. It is not our intent to mislead the reader or to provide incomplete information. Symantec evaluated the security of the network stack. | SYMANTEC ADVANCED THREAT RESEARCH 1 Windows Vista Network Attack Surface Analysis A Broad Overview Tim Newsham1 and Jim Hoagland Principal Security Researcher Symantec Corporation Abstract A pre-release version of Microsoft Windows Vista was examined to determine the external security exposure and to identify how the networking components have changed from previous versions of Microsoft Windows. Changes in the networking stack network services and core protocols are enumerated and their effect on the external security of the system is analyzed. Index Terms Computer network security Computer security Operating systems. I. Introduction Windows Vista is Microsoft s much anticipated new client operating system. When released it is due to replace Windows XP as Microsoft s premier desktop operating system. Windows Vista represents a significant departure from previous Windows systems both in terms of its emphasis on security and its many new features. As security has grown in importance Microsoft has paid increasingly more attention to it evidenced by the significant resource investment that has been made. Windows Vista provides Microsoft with its first opportunity to introduce security into the design process of the core operating system itself. Microsoft has also chosen Windows Vista as the platform on which to introduce many newly developed technologies. The Windows Vista network stack is particularly interesting because many of its components are new. The TCP IP network stack itself has been rewritten and is one of Vista s largest departures from previous versions of Windows. The new stack was written to allow easier maintenance important new performance enhancements and improved stability 30 . It integrates support for IPv6 and IPv4 into a single network stack and provides IPv6 support in the default configuration for the first time in the history of Windows. Many other new protocols are implemented and supported in Vista either as part of the network stack or as .

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