DNS

The Design of the Domain Name System, Part V - Large Data

In the previous four installments, we've been looking at aspects of the design of the DNS. Today we look at the amount of data one can ask the DNS to store and to serve to clients. Most DNS queries are made via UDP, a single packet for query and a single packet for the response, with the packet size traditionally limited to 512 bytes. This limits the payload of the returned records in a response packet to about 400 bytes... more

Domain Name Registrations Reach 215 Million, 5 Million Added in Q2

The latest Domain Name Industry Brief published by Verisign reports more than 5 million domain names were added to the Internet in the second quarter of 2011, bringing the total number of registered domain names to more than 215 million worldwide across all domains. The increase of 5.2 million domain names marks a growth rate of 2.5 percent over the first quarter. Registrations have grown by more than 16.9 million, or 8.6 percent, since the second quarter of 2010. more

European Commission Seeking Greater Governmental Control Over the Internet

Kieren McCarthy reporting in .nxt: "An extraordinary series of policy papers drawn up by the European Commission and seen by .Nxt have called for greater governmental control over the Internet's domain name system. ...the measures would provide governments with de facto control over the Internet's naming systems and bring an end to the independent and autonomous approach that has defined the Internet's domain name system since its inception." more

The Design of the Domain Name System, Part IV - Global Consistency

In the previous installments, we've been looking at aspects of the design of the DNS. Many databases go to great effort to present a globally consistent view of the data they control, since the alternative is to lose credit card charges and double-book airline seats. The DNS has never tried to do that. The data is roughly consistent, but not perfectly so. more

The Design of the Domain Name System, Part III - Name Structure and Delegation

In the previous installments, we looked at the overall design of the DNS and the way DNS name matching works. The DNS gains considerable administrative flexibility from its delegation structure. Each zone cut, the place in the DNS name tree where one set of DNS servers hands off to another, offers the option to delegate the administration of a part of the DNS at the delegation point. more

The Design of the Domain Name System, Part II - Exact and Approximate Name Matching

In the previous installment, we looked at the overall design of the DNS. Today we'll look at the ways it does and does not allow clients to look up data by name. The most important limitation of the DNS, compared to other databases, is that it only does exact match lookups. That is, with a few minor exceptions, the name in the query has to match the name of the desired records exactly. more

The Design of the Domain Name System, Part I

Over the past 30 years the Domain Name System has become an integral part of the operation of the Internet. Due to its ubiquity and good performance, many new applications over the years have used the DNS to publish information. But as the DNS and its applications have grown farther from its original use in publishing information about Internet hosts, questions have arisen about what applications are appropriate for publication in the DNS, and how one should design an application to work well with the DNS. more

Prediction Methods for Crime

There's a new sheriff in town and he's riding the horse of "predictive policing". Back in July the Santa Cruz Police Department began deploying police officers to places where crime is likely to occur in the future -- making use of new predictive modeling programs that are designed to provide daily forecasts of crime hotspots -- thereby allowing the Department to preempt more serious crimes before they occurred. In essence, this is another physical-world application of machine learning and clustering technologies -- applied to preempting a criminal problem. In the cyber-world we've been applying these techniques for a number of years with great success. more

DDoS Attacks: Don’t Be In Denial of the Risks

Unlike traditional attacks by hackers which breach a business's security systems, resulting in defaced websites, intellectual property theft and/or customer data theft, a DDoS attack focuses on making a business's Internet connected infrastructure (e.g. web servers, email servers, database servers, FTP servers, APIs, etc.) unavailable to legitimate users. A business's brand reputation, which can take years to establish, can be swept away in just a few hours from a single DDoS attack in the same way a natural disaster like a flood or earthquake can impact a traditional brick and mortar business. more

.Nxt - You Are All Cordially Invited

There are only a few occasions in any of our lifetimes where what we know and have grown used to is turned on its head. We have now lost the generation that heard radio for the first time; there are only a few who can recall the first television pictures; but many, many more saw color appear on their screens for the first time. more

Verisign Announces CEO Resignation

In its second quarter 2011 earnings call, Verisign announced that Mark McLaughlin has submitted his resignation to become the CEO of a private company. His last day with the company will be August 25, 2011. Mark concluded his board service at the regularly scheduled board of directors meeting on July 27, 2011 and resigned as president and chief executive officer effective August 1, 2011. Jim Bidzos, Verisign's founder and previous CEO, will become the president and chief executive officer effective August 1, 2011. more

DNSSEC Baby Steps Reported at ICANN 41

The Internet is slowly beginning to adopt the new DNSSEC domain names standard, but significant challenges remain. That was the main takeaway from a four-hour workshop on the technology held during the recent ICANN 41 public meeting in Singapore, which heard from many domain registries, registrars and other infrastructure providers. more

Six Key Issues About Operating a TLD Registry

Brand owners unfamiliar with the domain name system (DNS) are hearing that their first step in registering a top level domain (TLD) is to select a back-end TLD registry provider. The fear instilled in them is that if they don't act quickly, all available service providers will have reached their capacity. Given ICANN's tight and inflexible application submission schedule, brands don't want to be left at the starting gate. more

An ITU Cut and Paste Job for New TLDs Could Cost $150k

It was with great interest that I read a recent announcement about a plan by the International Telecommunications Union (ITU) to publish template answers on a wiki for the 22 questions relating to registry technical operations contained within ICANN's new Top-Level Domain Applicant Guidebook. As someone who has spent the best part of six years following the development of the program (witnessing first-hand each evolution of the Applicant Guidebook) my first thought was one of bemusement... more

Email in the World’s Languages - Part II

In our last installment we discussed MIME, Unicode and UTF-8, and IDNA, three things that have brought the Internet and e-mail out of the ASCII and English only era and closer to fully handling all languages. Today we'll look at the surprisingly difficult problems involved in fixing the last bit, internationalized e-mail addresses. more