http://www.networkmagazine.com/shared/article/showArticle.jhtml?articleId=17200256&classroom=
Domain Name Service is a vital cog in any InterNet service machine, and like every other part of the TCP/IP suite [DNS is considered an Application Layer protocol], it was not designed with security in mind. The range of risks will only increase as wireless technologies achieve widespread adoption in organizations.
This detailed article, with extensive embedded supporting links, explains what the problems are, and what you can do to guard against them. Such articles underscore the fact that security is a multifaceted activity, not simply a slapping a firewall in front of your LAN and using passwords. In addition to being a valuable reference for a course dealing with Net security, for the more creative amongst us it could serve as a source of ideas for attack testing under laboratory conditions.
The article includes references to DNS concepts and operations, and detailed methods of implementing DNS security.
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