THE WHATIS.COM WORD-OF-THE-DAY March 17, 2003 stateful inspection
______________ SPONSORED BY: Free CRM white papers Download the key papers you need today to make better-informed decisions. Targeted categories include Business Intelligence, Data Warehousing, CRM Technology, Customer Service and Implementation, Integration and Business Processes. Click here to access the free SearchCRM.com white papers section http://searchcrm.techtarget.com/whitepapers3/0,,sid11,00.html ________________ TODAY'S WORD: stateful inspection See our complete definition with hyperlinks at http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci886233,00.html Stateful inspection is an advanced firewall architecture that was invented by Check Point Software Technologies in the early 1990s. Also known as dynamic packet filtering, it has replaced static packet filtering as the industry standard firewall solution for networks. Stateful inspection provides enhanced security by keeping track of communications packets over a period of time. Both incoming and outgoing packets are examined. Outgoing packets that request specific types of incoming packets are tracked; only those incoming packets constituting a proper response are allowed through the firewall. In contrast to static packet filtering, in which only the headers of packets are checked, stateful inspection analyzes packets down to the Application layer. In a firewall that uses stateful inspection, the network administrator can set the parameters to meet specific needs. In a typical network connected to the Internet, ports are normally closed unless an incoming packet requests connection to a specific port, and then only that port is opened to the packet. This prevents port scanning, a well-known technique used by hackers to gain entry to networks and individual computers connected to the Internet. A well-engineered, comprehensive firewall is a must for networks today. Firewalls are increasingly employed by home computer users as well, particularly those with broadband Internet connections. RELATED TERMS: firewall http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci212125,00.html port scan http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci214054,00.html dynamic packet filter http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci212023,00.html header http://whatis.techtarget.com/definition/0,,sid9_gci213480,00.html Application layer http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci211579,00.html ______________ SELECTED LINKS: Service Strategies, Inc. explains how stateful inspection works. http://www.ssimail.com/Stateful.htm ______________ TODAY'S TECH NEWS: MICROSOFT TO ANNOUNCE MAJOR SHIFT IN MANAGEABILITY STRATEGY And then there was one. One management product, that is. At next week's Microsoft Management Summit, the software maker will unveil its plans for Sydney, a project that sources say will combine Microsoft's three Windows manageability products into one. http://searchwindowsmanageability.techtarget.com/originalContent/0,289142,sid33_gci886052,00.html SAP'S HASSO PLATTNER SURRENDERS CO-CEO TITLE SAP's Hasso Plattner is surrendering his title, and this time it's for real. Following months of speculation about Plattner's plans to leave the helm of the company he helped start, Plattner is stepping aside. http://searchsap.techtarget.com/originalContent/0,289142,sid21_gci886071,00.html HAM RADIO GROUP TUNES IN DISK-TO-DISK BACKUP A group representing ham radio operators now uses disk-to-disk backup. 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Configure Windows "hotkeys" in the Control Panel >> See correct answer http://searchwin2000.techtarget.com/originalContent/0,289142,sid1_gci875436,00.html ______________________ THIS WEEK | What's new Introduction to XML http://whatis.techtarget.com/content/0,290959,sid9_gci886099,00.html Our Favorite Technology Blogs http://whatis.techtarget.com/definition/0,,sid9_gci884512,00.html ______________________ QUIZ #36 | Linux Basics Take our latest quiz and see how much you know about Linux. 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