Magazine article Security Management

Not Masters of Their Domain. (Tech Talk)

Magazine article Security Management

Not Masters of Their Domain. (Tech Talk)

Article excerpt

Every Web site depends on a properly functioning Domain Name System (DNS) server to get visitors to its site. The DNS is the device that translates text Web addresses, or URLs, into numeric IP addresses. But servers are often improperly configured, according to IT experts, creating the potential for system failure.

An incorrectly configured DNS will not only prevent potential visitors from finding a particular Web site, but it can also be "a single point of failure presenting a risk of total loss of electronic connectivity for a company," according an article by the FBI's National Infrastructure Protection Center (NIPC). The article, "Domain Name System: Eliminating Single Points of Failure," which appeared in a recent issue of NIPC's online publication Highlights, points to three risks associated with DNS failure.

The first is lack of redundancy, where primary and secondary name servers have the same address, in effect making the organization completely dependent on a single server. The second is incorrect configurations, which can result in only one name server having authoritative DNS information. The third factor that can increase the risk of DNS failure is architectural flaws. …

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