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After the DNS root zone was finally signed and a number of Top-Level Domains (TLDs) began signing their zones, we were curious to see how many clients actually request DNSSEC information. We looked at the RIPE NCC server that provides secondary service to several country code top-level domains (ccTLDs). more
The design of DNS included an important architectural decision: the transport protocol used is user datagram protocol (UDP). Unlike transmission control protocol (TCP), UDP is connectionless, stateless, and lightweight. In contrast, TCP needs to establish connections between end systems and guarantees packet ordering and delivery. DNS handles the packet delivery reliability aspect internally and avoids all of the overhead of TCP. There are two problems this introduces. more
Neil Schwartzman writes to report that U.S. Cert issued Alert TA13-088A on Friday March 29, 2013. "It is a solid how-to guide to test for, and remediate DNS configurations that can be used for Distributed Denial of Service attacks." more
The National Cybersecurity Center of Excellence (NCCoE) has invited comments on a draft practice guide to help organizations improve email security and defend against phishing, man-in-the-middle, and other types of email-based attacks. more
The DNSSEC Industry Coalition conducted its first face to face meeting on Friday, March 13, 2009 at Google's Washington, DC office. Google's fun filled meeting room was packed with organizations that share a keen interest in DNS Security through the implementation of DNSSEC. more
The Internet Society Deploy360 Programme issues a call for speakers for a series of upcoming global ION Conferences. ISOC welcomes submissions from IPv6 and DNSSEC experts to speak at any of the following ION conferences. more
Registrars have the opportunity to fundamentally change the landscape of the Internet's security infrastructure by working to close the DNSSEC functionality gap. Virtually everything every Internet user does on the Internet depends on the DNS. DNSSEC is not just about protecting the DNS, it is about building a secure infrastructure foundation upon which new and innovative services and applications can be built to benefit us all. Registrars are the linchpins to advancing the deployment of DNSSEC. more
Today the e-mail faerie brought news of the release of BIND9 9.10.0 which can be downloaded from here. BIND9 is the most popular name server on the Internet and has been ever since taking that title away from BIND8 which had a few years earlier taken it from BIND4. I used to work on BIND, and I founded ISC, the home of BIND, and even though I left ISC in July 2013 to launch a commercial security startup company, I remain a fan of both ISC and BIND. more
July 15, 2010 (yesterday) marked the end of the beginning for DNSSEC, as the DNS root was cryptographically signed. For nearly two decades, security researchers, academics and Internet leaders have worked to develop and deploy Domain Name System Security Extensions (DNSSEC). DNSSEC was developed to improve the overall security of the DNS, a need which was dramatized by the discovery of the Kaminsky bug a few years ago. more
The DNS is normally a relatively open protocol that smears its data (which is your data and mine too!) far and wide. Little wonder that the DNS is used in many ways, not just as a mundane name resolution protocol, but as a data channel for surveillance and as a common means of implementing various forms of content access control. But all this is poised to change. more
It's no secret that Comcast has been leading the charge of DNSSEC deployment among ISPs. For the past couple years, Comcast has been testing and pushing for the widespread adoption of DNSSEC. In the spirit of increasing adoption, I thought I would interview the DNS gurus at Comcast to see what they've learned and what advice they would give other ISPs considering DNSSEC deployment. more
All effective spam filters use DNS blacklists or blocklists, known as DNSBLs. They provide an efficient way to publish sets of IP addresses from which the publisher recommends that mail systems not accept mail. A well run DNSBL can be very effective; the Spamhaus lists typically catch upwards of 80% of incoming spam with a very low error rate. DNSBLs take advantage of the existing DNS infrastructure to do fast, efficient lookups. A DNS lookup typically goes through three computers... more
While conventional cyber attacks are evolving at breakneck speed, the world is witnessing the rise of a new generation of political, ideological, religious, terror and destruction motivated "Poli-Cyber™" threats. These are attacks perpetrated or inspired by extremists' groups such as ISIS/Daesh, rogue states, national intelligence services and their proxies. They are breaching organizations and governments daily, and no one is immune. more
The ways in which the Internet is embedded in our daily lives are too varied and numerous to catalogue. The Internet delivers information, access to goods, services, education, banking, social interaction and, increasingly, work space. The global pandemic has only heightened our dependence on the online world, which is why efforts to ensure that the Internet remains a trusted and secure environment are more important than ever. more
In cooperation with the ICANN Security and Stability Advisory Committee (SSAC), we are planning a DNSSEC and Security Workshop for the ICANN78 Annual General Meeting being held as a hybrid meeting from 21-26 October 2023 in Hamburg, Germany in the Central European Summer Time Zone (UTC +2). This workshop date will be determined once ICANN creates a block schedule for us to follow; then we will be able to request a day and time. more
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