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New Open Source DNS Server Released TodayMay 20, 2008; 09:36 AM Amsterdam, The Netherlands, Oxford, UK and Mountain View, CA – May 20, 2008 – Unbound – a new open source alternative to the BIND domain name system (DNS) server– makes its worldwide debut today with the public release of Unbound 1.0 at http://unbound.net. Released to open source developers by NLnet Labs, VeriSign, Inc. (NASDAQ: VRSN), Nominet, and Kirei, Unbound is a validating, recursive, and caching DNS server designed as a high-performance alternative for BIND (Berkeley Internet Name Domain). Unbound will be supported by NLnet Labs. An essential component of the Internet, the DNS ties domain names (such as www.verisign.com) to the IP addresses and other information that Web browsers need to access and interact with specific sites. Though it is unknown to the vast majority of Web users, DNS is at the heart of a range of Internet-based services beyond Web browsing, including email, messaging and Voice Over Internet Protocol (VOIP) telecommunications. Although BIND has been the de facto choice for DNS servers since the 1980s, a desire to seek an alternative server that excels in security, performance and ease of use prompted an effort to develop an open source DNS implementation. Unbound is the result of that effort. Mostly deployed by ISPs and enterprise users, Unbound will also be available for embedding in customer devices, such as dedicated DNS appliances and ADSL modems. By making Unbound code available to open source developers, its originators hope to enable rapid development of features that have not traditionally been associated with DNS. One is an implementation of DNSSEC, a security enhancement that Unbound adds to the DNS protocol and that is essential to help protect DNS transactions. The only open source DNS implementations that support the DNSSEC standard are Unbound and BIND. "We have released the software under the BSD license that allows use in other products without any major restrictions,” said Olaf Kolkman, director of NLnet Labs, a not-for-profit research and development foundation in the Netherlands. “We hope that making our software freely available will aid the deployment of DNSSEC, which fits straight into NLnet Labs charter.” "Although simplicity and performance have always been primary goals for Unbound, we have placed extra attention on security features, particularly since DNSSEC is not yet deployed widely,” said Wouter Wijngaards, lead Unbound developer at NLnet Labs. “Unbound provides defenses against forgery while suffering minimal degradation in performance. In addition, we have worked hard to produce well documented, readable and elegant code. With that we try to make the barrier for security audit and code review as low as possible." Four Years in
the Making "The prototype of Unbound demonstrated that we had made good architectural decisions and that the complex security algorithms worked. The Java implementation, however, would never be able to meet the performance characteristics that real-world use would demand," said David Blacka, senior research engineer at VeriSign. Roy Arends, Senior Researcher at Nominet UK, said the Unbound prototype served “to swiftly test new interoperability of DNS protocol extensions. The original modular design has proved to work well and kept the overall design straightforward and clean. The Java prototype was used for several new DNS protocol features in use today.” "The prototype was too promising to shelve. We were happy NLnet Labs could commit to the development of the C version of Unbound,” said Matt Larson, director of DNS Research at VeriSign. “NLnet Labs has the appropriate expertise and are committed to continue support for Unbound.” "Nominet is pleased that the C version of unbound is built with the same dedication and by the same team that brought us NSD,” added Nominet’s Arends. ‘Fastest caching server we
tested’ "We are very impressed with Unbound,” said Jan-Piet Mens, author of the forthcoming book, "Alternative DNS Servers.” “It is great code, very versatile, and it is the fastest caching server we tested." NLnet Labs offers support for Unbound through a bug-tracking system and user mailing lists. "We realize that people will run this code in critical environments, and NLnet Labs is committed to actively supporting Unbound,” added NLnet Lab’s Kolkman. “Should we ever cease to support Unbound, we will announce this at least two years in advance". Unbound runs on posix-based operating systems such as Linux, MacOS X, FreeBSD, and Solaris. The code, its documentation, and additional information are all freely available for download at http://unbound.net/. About NLnet
Labs About
VeriSign About
Nominet Nominet is a not-for-profit company with members instead of shareholders and is recognized as the .uk domain name registry by the Internet industry and the UK Government. It is not a governing or regulatory body, but provides a public service for the .uk namespace on behalf of the UK Internet community. About
Kirei Contacts NLnet Labs: [email protected], +31 20 888 4551 For Nominet: Gemma Griffiths, [email protected], Racepoint Group UK, +44 020 8752 3200 Kirei: [email protected]
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