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OpenDNS is a company and service which extends the Domain Name System (DNS) by adding features such as phishing protection and optional content filtering to traditional recursive DNS services. The company hosts a cloud computing security product suite, Umbrella, designed to protect enterprise customers from malware, botnets, phishing, and targeted online attacks. The OpenDNS Global Network processes an estimated 60 billion DNS queries daily from 50 million active users connected to the service through 24 data centers worldwide. Previously OpenDNS provided an ad-supported service "showing relevant ads when we On June 30, 2015, Cisco announced that it was buying OpenDNS for in an all-cash transaction, plus retention based incentives for OpenDNS, and intends to continue development of OpenDNS with its other cloud-based security products.〔(【引用サイトリンク】url=http://newsroom.cisco.com/press-release-content?type=webcontent&articleId=1667697 )〕 ==Products and services== The name "OpenDNS" refers to the DNS concept of being open, where queries from any source are accepted. It is not related to open source software; the service is based on closed-source software.〔(OpenDNS | 0x80 )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「OpenDNS」の詳細全文を読む スポンサード リンク
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