Networks

OpenFlow - The Programmable Network Revolution

Over the past few months I have made regular references to OpenFlow. This is an exciting new development that fits in very well with several of the next generation technology developments that we have discussed in some detail over the past few years -- new developments such smart cities and smart societies, the internet of things. Such networks need to operate more on a horizontal level, rather than the usual vertical connection between a computing device and the users. more

How to Evaluate Performance of a DNS Resolver

Ten years ago everyone evaluating DNS solutions was always concerned about performance. Broadband networks were getting faster, providers were serving more users, and web pages and applications increasingly stressed the DNS. Viruses were a factor too as they could rapidly become the straw that broke the camel's back of a large ISP's DNS servers. The last thing a provider needed was a bottleneck, so DNS resolution speed became more and more visible, and performance was everything. more

Disruptive Google Fiber Is Shaking up the Telco World

The Google Fiber project is receiving international attention. This in itself is a good thing, since it brings the benefits of high-speed FttH infrastructure to the attention of large numbers of people in business and government who will not have to deal with such developments on a regular basis... At the same time we have to look at Google Fiber from the point of view of operating in the American regulatory environment. Yes, we can all learn from its disruptive model, and particularly when the results of the more innovative elements of the services begin to kick in; but for other reasons there is no way that this model can be replicated elsewhere. more

US Telcos Withdrawing from DSL and Telephony Markets - A Case of Lobbying Power and Poor Regulation

During the last few months the US's main DSL providers AT&T and Verizon have begun retracting from the DSL and landline market in many rural and less commercially viable areas while concentrating on their wireless LTE ambitions. DSL and voice telephony provide relatively low returns, which can be whittled away through network maintenance costs, while LTE promises to deliver proportionately higher profits, based on exorbitant charges by data volume.  more

Cyber and Telecommunications Defence One of the Fastest Growing Industries in the World

In the past five years, cyber and telecommunications defence has left its niche market to become one of the fastest growing industries in the world. In 2011, governments, industry and ordinary computer users spent roughly £65 billion shoring up their computer networks, a figure that is predicted to double within five years. more

Some of the World’s Largest Investors Are Investing in FttH

While some governments are still struggling with the concept of FttH - some of the world's largest investors such as the Dutch superannuation funds (ABP, PGGM and Pensioenfonds Vervoer (PfV)), have been investing in FttH in the Netherlands since 2010. This is happening in a country with a broadband cable network that covers 95% of the country and nationwide access to ADSL2+ networks. more

Broadband Demand-Side Management

Countries, cities and commercial organisations around the globe are facing problems associated with the rollout of fibre-to-the-home networks... We have been warning about these issues for well over a decade. The problem arises because the telecoms industry has been based on the principle 'build and they will come'. more

High Performance DNS Needs High Performance Security

There's been a lot of emphasis on DNS performance lately because faster DNS contributes directly to a better user experience. There's an interesting flipside to DNS performance though, higher performance DNS servers may be better targets for cache poisoning attacks. Faster servers give attackers more opportunities to insert fake entries into the DNS - speed can kill (or at least inflict a nasty wound!) so it's important to understand the security implications if you're looking to upgrade DNS performance. more

A Report on the OECD/BEREC Workshop on Interconnection and Regulation

I presented at a OECD/BEREC workshop that was held on the 20th June in Brussels, and I'd like to share some personal impressions and opinions from this workshop. The OECD/BEREC workshop was a policy-oriented peering and exchange forum. It was not a conventional operational peering forum where the aim is to introduce potential peers to each other and facilitate peer-based interconnection of network operators, but a workshop that involved both network operators and various national and EU regulators, as well has having inputs from the OECD. more

Medical Body Area Networks

The Federal Communications Commission (FCC) in Washington has advanced its wireless health care agenda by adopting rules that will enable Medical Body Area Networks (MBANs), low-power wideband networks consisting of multiple body-worn sensors that transmit a variety of patient data to a control device. MBANs provide a cost effective way to monitor every patient in a healthcare institution, so clinicians can provide real-time and accurate data which allows them to intervene if necessary. more

Measuring IPv6 - Country by Country

Some years ago a report was published that ranked countries by the level of penetration of broadband data services. You can find the current version of that report at the OECD web site. This ranking of national economies had an electrifying impact on this industry and upon public policies for broadband infrastructure in many countries. Perhaps this happened because there were some real surprises lurking in the numbers at the time. more

IPv6 and IP Convergence: Are International Treaties About to Govern the Internet?

Contributing to international telecommunications standards, not in the IETF but in a more august and imposing body, the ITU-T, part of the United Nations, was quite an experience. Still called CCITT in those days, it was formal and solemn; everybody was part of and sat with their national delegation, countries were aligned in alphabetical order; nobody spoke out of turn, every word was simultaneously translated in the three official languages of the time and we wore suit and tie.  more

A Closer Look at the AIP Internet Draft Proposal

Just in time for ICANN's 44th meeting next week, a new Internet Draft has turned up, purporting to fix the centralization of the DNS. The draft has received some attention, including an article in PC World. It isn't entirely clear what the real purpose of the draft is, but it is hard to credit the notion that it is solving any technical problem. Without examining the reasons why the draft exists, I want to debunk a claim in it. more

Botnet Metrics and Calibration

As ISP's continue to spin up their anti-botnet defenses and begin taking a more active role in dealing with the botnet menace, more and more interested parties are looking for statistics that help define both the scale of the threat and the success of the various tactics being deployed... To overcome this problem there are several initiatives trying to grapple with this problem at the moment.. Obviously, if every ISP was using the same detection technology, in the same way, at the same time, it wouldn't be such a difficult task. Unfortunately, that's not the case. more

Obama to Sign Executive Order for Streamlining Approval of Internet Networks

Currently, the process for approving broadband construction projects on federal property varies from agency to agency. Property controlled by the federal government includes roads, about 30 percent of the nation's land and more than 10,000 buildings. The order will require the Departments of Agriculture, Commerce, Defense, Interior, Transportation and Veterans Affairs as well as the Postal Service to develop a single process for approving Internet construction projects. more