DNS Security

DNS Security / Most Viewed

Securing the DNS in a Post-Quantum World: Hash-Based Signatures and Synthesized Zone Signing Keys

In my last article, I described efforts underway to standardize new cryptographic algorithms that are designed to be less vulnerable to potential future advances in quantum computing. I also reviewed operational challenges to be considered when adding new algorithms to the DNS Security Extensions (DNSSEC). In this post, I'll look at hash-based signatures, a family of post-quantum algorithms that could be a good match for DNSSEC from the perspective of infrastructure stability. more

Cyptech Needs You!

In August of last year I wrote in a blog about the importance of cryptech to wide-scale trust in the Internet. For those who don't know about it, http://cryptech.is is a project aiming to design and deploy an openly developed, trustable Hardware Security Module (HSM) which can act both as a keystore (holding your secrets and keeping them private) and as a signing engine. more

Study Finds Majority of U.S. Gov’t Agencies Fail to Meet Security Mandate for DNSSEC Adoption

Majority of U.S. Federal agencies using .gov domains have not signed their DNS with DNSSEC (Domain Name Security Extensions) despite a December 2009 Federal deadline for adoption, according to the latest report by IID (Internet Identity). IID analyzed the DNS of more than 2,900 .gov domains and has released the results in its "Q3 State of DNS Report". more

Join InterCommunity 2020 on Feb 26 About Internet Society’s Open Standards Everywhere Project

How can you use the latest open Internet standards to make web servers as secure and as fast as possible? How can you ensure your web site is available to everyone across the global network of networks? Please join me on Wednesday, February 26, 2020, from 13:00 – 14:00 UTC in our first InterCommunity 2020 event to learn about the Internet Society's new "Open Standards Everywhere" project. more

U.S. Department of Commerce Seeking Public Comments for Deployment of DNSSEC

During a conference, "Internet of Things," in France, the U.S. Department of Commerce made the announcement that it will hold a public consultation on the different proposals to cryptographically sign the DNS root zone file, and determine who will hold the root zone trust anchor for global DNSSEC implementation, says Milton Mueller on the Internet Governance Forum blog. The blog, titled "Commerce Department asks the world to comment on its plans to retain control of the root," continues... more

Newer Cryptographic Advances for the Domain Name System: NSEC5 and Tokenized Queries

In my last post, I looked at what happens when a DNS query renders a "negative" response -- i.e., when a domain name doesn't exist. I then examined two cryptographic approaches to handling negative responses: NSEC and NSEC3. In this post, I will examine a third approach, NSEC5, and a related concept that protects client information, tokenized queries. The concepts I discuss below are topics we've studied in our long-term research program as we evaluate new technologies. more

Call for Participation – ICANN DNSSEC and Security Workshop at ICANN67, Cancun, Mexico

The ICANN Security and Stability Advisory Committee (SSAC) and the Internet Society Deploy360 Programme are planning a DNSSEC and Security Workshop during the ICANN67 meeting held from 07-12 March 2020 in Cancun, Mexico. The original DNSSEC Workshop has been a part of ICANN meetings for many years and has provided a forum for both experienced and new people to meet, present, and discuss current and future DNSSEC deployments. more

Cryptographic Tools for Non-Existence in the Domain Name System: NSEC and NSEC3

In my previous post, I described the first broad scale deployment of cryptography in the DNS, known as the Domain Name System Security Extensions (DNSSEC). I described how a name server can enable a requester to validate the correctness of a "positive" response to a query -- when a queried domain name exists -- by adding a digital signature to the DNS response returned. more

My Top Takeaways from DNS-OARC 24

The 24th DNS-OARC meeting was held last week in Buenos Aires -- a two-day DNS workshop with amazingly good, consistent content. The programme committee are to be congratulated on maintaining a high quality of presentations. Here are my picks of the workshop. They fall into three groups, covering themes I found interesting... These presentations related to the ongoing problem of DNS as a source of reflection attacks, or a victim of attempted DDoS... more

ICANN Org’s Multifaceted Response to DNS Abuse

While the March report from ICANN's Domain Abuse Activity Reporting system show a general reduction in second-level gTLD domain names identified as being used in phishing, malware distribution, and botnet command and control, it has been widely reported that criminals are taking advantage of the global COVID-19 pandemic by launching malicious online campaigns. There have also been numerous reports of spikes in the use of COVID-19-related domain names for DNS Abuse. more

Information Protection for the Domain Name System: Encryption and Minimization

In previous posts in this series, I've discussed a number of applications of cryptography to the DNS, many of them related to the Domain Name System Security Extensions (DNSSEC). In this final blog post, I'll turn attention to another application that may appear at first to be the most natural, though as it turns out, may not always be the most necessary: DNS encryption. (I've also written about DNS encryption as well as minimization in a separate post on DNS information protection.) more

Afilias and Neustar to Collaborate With ISC on DNS Security Initiative

Internet Systems Consortium (ISC) has announced that it is working with Afilias and Neustar, Inc. in the effort to support ISC's DNSSEC Look-aside Validation (DLV) registry by providing secondary DNS service for the DLV zone. DLV is a mechanism that provides many of the benefits of DNSSEC (short for DNS Security Extensions), enabling domain holders to secure their domain information today in advance of broader DNSSEC deployment and adoption. "Adding Afilias and Neustar as secondary DNS providers for the DLV zone demonstrates our collective understanding that DLV is a vitally important production service bigger than any single provider in the same way that there are 13 root server operators, not just one." more

When You Hear “Security,” Think “National Sovereignty”

These days you can hardly talk about Internet governance without hearing about security. DNSSEC is a hot issue, ICANN's new president is a cyber-security expert, and cyberattacks seem to be a daily occurrence.
This reflects a larger shift in US policy. Like the Bush administration before it, the Obama administration is making security a high priority for the US. Only now the emphasis is on security in cyberspace. The outlines of the new policy were published in the recent US Cyberspace Policy Review, which even recommends a cyber security office directly in the White House. more

The True Effect of Corona on the DNS

In recent weeks we've seen a range of press articles, security blogposts and public statements addressing real or perceived issues with network capacity and the domain name system (DNS) in particular. These range from concerns about the resilience of the DNS with questions on the impact of the number of registrations to news indicating that a tidal wave of fraud and abuse is hitting the world. more

Call for Participation - ICANN DNSSEC Workshop at ICANN63 Barcelona

Do you have a great idea about DNSSEC or DANE that you'd like to share with the wider community? If so, and you're planning to be in Barcelona, Spain for ICANN63 in October 2018, submit a proposal to present your idea at the DNSSEC Workshop! Send a brief (1-2 sentence) description of your proposed presentation to [email protected] by Friday, 07 September 2018. more