Internet security experts say that misconfigured DSL and cable modems are worsening a well-known problem with the Internet's DNS (domain name system), making it easier for hackers to launch distributed denial-of-service (DDoS) attacks against their victims. According to research set to be released in the next few days, part of the problem is blamed on the growing number of consumer devices on the Internet that are configured to accept DNS queries from anywhere, what networking experts call an "open recursive" or "open resolver" system. As more consumers demand broadband Internet, service providers are rolling out modems configured this way to their customers said Cricket Liu, vice president of architecture with Infoblox, the DNS appliance company that sponsored the research. "The two leading culprits we found were Telefonica and France Telecom," he said.
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Tuesday, November 17, 2009
DNS problem linked to DDoS attacks gets worse
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The percentage of devices on the Internet that are configured to accept DNS queries from anywhere has jumped from around 50 percent in 2007 to nearly 80 percent this year, according to research sponsored by DNS appliance company Infoblox. As more consumers demand broadband Internet, service providers are rolling out modems configured this way to their customers, said Cricket Liu, vice president of architecture with Infoblox.
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