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Six months following the April 11th issuance of the Beijing Communique by ICANN's Governmental Advisory Committee (GAC), ICANN continues to wrestle with whether to accept the bulk of the GAC's proposed safeguards for new gTLDs as set forth in Annex 1 of that document. On October 1st ICANN Board Chairman Stephen Crocket sent a letter to GAC Chair Heather Dryden summarizing the results of the September 28th meeting of the New gTLD Program Committee (NGPC) that considered the remaining and still undecided advice received from the GAC. more
DNS tunneling -- the ability to encode the data of other programs or protocols in DNS queries and responses -- has been a concern since the late 1990s. If you don't follow DNS closely, however, DNS tunneling likely isn't an issue you would be familiar with. Originally, DNS tunneling was designed simply to bypass the captive portals of Wi-Fi providers, but as with many things on the Web it can be used for nefarious purposes. For many organizations, tunneling isn't even a known suspect and therefore a significant security risk. more
ICANN has announced that Paul Mockapetris, inventor of the Domain Name System (DNS), has agreed to serve as Senior Security Advisor to the Generic Domains Division and its President, Akram Atallah. more
It's late in the new gTLD day and the program looks to be inching ever closer to the finish line. Yet last minute hiccups seem to be a recurring theme for this ambitious project to expand the Internet namespace far beyond the 300 odd active TLDs in existence today (counting generics and country codes). A drive for growth which is already underway, with 63 gTLD contracts now signed as of mid September... But will those users find themselves at greater risk because of this namespace expansion? That's what several parties have been asking in recent months. more
Previous posts (Part 1 and Part 2) offer background on DNS amplification attacks being observed around the world. These attacks continue to evolve. Early attacks focused on authoritative servers using "ANY" queries for domains that were well known to offer good amplification. Response Rate Limiting (RRL) was developed to respond to these early attacks. RRL, as the name suggests, is deployed on authoritative servers to rate limit responses to target names. more
There are some real problems in DNS, related to the general absence of Source Address Validation (SAV) on many networks connected to the Internet. The core of the Internet is aware of destinations but blind to sources. If an attacker on ISP A wants to forge the source IP address of someone at University B when transmitting a packet toward Company C, that packet is likely be delivered complete and intact, including its forged IP source address. Many otherwise sensible people spend a lot of time and airline miles trying to improve this situation... The problems created for the Domain Name System (DNS) by the general lack of SAV are simply hellish. more
Last week, The New York Times website domain was hacked by "the Syrian Electronic Army". Other famous websites faced the same attack in 2012 by the Hacker group "UGNazi" and, in 2011 by Turkish hackers. Basically, it seems that no Registrar on the Internet is safe from attack, but the launching of new gTLDs can offer new ways to mitigate these attacks. more
Since Verisign published its second SSR report a few weeks back, recently updated with revision 1.1, we've been taking a deeper look at queries to the root servers that elicit "Name Error," or NXDomain responses and figured we'd share some preliminary results. Not surprisingly, promptly after publication of the Interisle Consulting Group's Name Collision in the DNS [PDF] report, a small number of the many who are impacted are aiming to discredit the report. more
Geoff Huston's recent post about the rise of DNS amplification attacks offers excellent perspective on the issue. Major incidents like the Spamhaus attack Geoff mentions at the beginning of his post make headlines, but even small attacks create noticeable floods of traffic. These attacks are easy to launch and effective even with relatively modest resources and we see evidence they're occurring regularly. Although DNS servers are not usually the target of these attacks the increase in traffic and larger response sizes typically stress DNS infrastructure and require attention from operation teams. more
"The General Services Administration is analyzing what caused an outage of .gov websites for a few hours Wednesday morning," reports Federal Times. Officials said the problem involved so-called DNSSEC cybersecurity measures that affected access to certain .gov sites, according to GSA spokeswoman Mafara Hobson. more
Gregory S. Shatan of Reed Smith writes: "Last week, ICANN (the organization that oversees the domain name system of the Internet) was busy with nothing less than the security and stability of the Internet. At ICANN's recent meeting in Durban, those of us attending heard a drumbeat of studies, presentations and concerns regarding "name collisions": the conflicts that will arise when new gTLDs go live and conflict with existing top-level extensions in private networks..." more
Throughout this series of blog posts we've discussed a number of issues related to security, stability, and resilience of the DNS ecosystem, particularly as we approach the rollout of new gTLDs. Additionally, we highlighted a number of issues that we believe are outstanding and need to be resolved before the safe introduction of new gTLDs can occur - and we tried to provide some context as to why, all the while continuously highlighting that nearly all of these unresolved recommendations came from parties in addition to Verisign over the last several years. more
In 2010, ICANN's Security and Stability Advisory Committee (SSAC) published SAC045 [PDF], a report calling attention to particular problems that may arise should a new gTLD applicant use a string that has been seen with measureable (and meaningful) frequency in queries for resolution by the root system. The queries to which they referred involved invalid Top-Level Domain (TLD) queries (i.e., non-delegated strings) at the root level of DNS, queries which elicit responses commonly referred to as Name Error, or NXDomain, responses from root name servers. more
On July 10th Architelos released the first NameSentry Report, benchmarking abuse levels in the domain name industry. For some time now, a debate has raged about the potential impact of new gTLDs on Internet safety and security, namely abusive registrations such as phishing, spam, malware, and so on. However, without benchmarking the current state, how can we realistically evaluate if new gTLDs have made any measureable difference in the level of abuse? more
Respected ICANN Chairman of the Board Steve Crocker has wrapped up his organisation's 47th International Meeting, held in Durban last week, with a message to the community. This message, reproduced here in its entirety, provides both a useful and concise summary of the Durban meeting and insights into the Chairman's view of where ICANN stands at the moment, the successes it has notched up and the challenges it faces. more
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