Networks

Will 2008 be the WiMAX Year?

There has recently been some good and bad news about WiMAX. On the good news part, an announcement made by the WiMAX Forum this month regarding the launching of the Mobile WiMAX certification program through which vendors can get their IEEE 802.16e-2005 equipment tested and possibly certified... On the bad news part, there was the Sprint-Clearwire breakup after three months of announcing a plan to join forces in building a nationwide WiMAX network in the US. Although it is anticipated that each company would carry on with its own WiMAX plans, analysts believe that the breakup would have negative impact on WiMAX deployment in the US... more

What Does “Network Neutrality” Mean?

A lot of ink and pixels have been spilled about the FCC's new rules for network neutrality. It's impossible to comment sensibly yet about the actual proposal, since as far as I know it's not been published anywhere, but the various news reports have left me confused about just what is being addressed. There are a number of different sorts of behavior that can result in performance differences to the end user... The purpose of this post is to give a simplified (with luck, not too horribly oversimplified) explanation of the different issues here. more

The Report on “Securing Cyberspace for the 44th Presidency”

A report "Securing Cyberspace for the 44th Presidency" has just been released. While I don't agree with everything it says (and in fact I strongly disagree with some parts of it), I regard it as required reading for anyone interested in cybersecurity and public policy. The analysis of the threat environment is, in my opinion, superb; I don't think I've seen it explicated better. Briefly, the US is facing threats at all levels, from individual cybercriminals to actions perpetrated by nation-states. The report pulls no punches... more

Internet Infrastructure: Stability at the Core, Innovation at the Edge (Part 2 of 5)

For nearly all communications on today's Internet, domain names play a crucial role in providing stable navigation anchors for accessing information in a predictable and safe manner, irrespective of where you're located or the type of device or network connection you're using. Over the past 15 years hundreds of millions of domain names have been added to the Internet's Domain Name System (DNS), and well over two billion (that's Billion!) new users, some ~34 percent of the global population, have become connected. more

Internet of Things Requires a Rethink of Business Models

There certainly is a lot of interest in machine-to-machine communication (M2M) and the Internet of Things (IoT). But what we are seeing is only what is happening on the surface. Most of the M2M activities are taking place unnoticed. For example, most newly produced electronic devices are now all M2M enabled. Over 100 million smart meters have already been deployed by the electricity industry, with literally hundreds of millions of them in the pipeline. Healthcare is another key industry. more

Don’t Overlook the Network When Migrating to the Cloud

The success or failure of public cloud services can be measured by whether they deliver high levels of performance, security and reliability that are on par with, or better than, those available within enterprise-owned data centers... IDC forecasts that public cloud IT spending will increase from $40 billion in 2012 to $100 billion in 2016. To provide the performance, security and reliability needed, cloud providers are moving quickly to build a virtualized multi-data center service architecture, or a "data center without walls." more

Mitigating the Increasing Risks of an Insecure Internet of Things

The emergence and proliferation of Internet of Things (IoT) devices on industrial, enterprise, and home networks brings with it unprecedented risk. The potential magnitude of this risk was made concrete in October 2016, when insecure Internet-connected cameras launched a distributed denial of service (DDoS) attack on Dyn, a provider of DNS service for many large online service providers (e.g., Twitter, Reddit). Although this incident caused large-scale disruption, it is noteworthy that the attack involved only a few hundred thousand endpoints... more

The Real Reason Why Network ‘Neutrality’ Is Impossible

In "Net Neutrality: Discrimination, Competition, and Innovation in the UK and US", Alissa Cooper and Ian Brown explore the relationship between two broadband regulatory regimes and their practical outcomes. The paper is of (paradoxical) interest as it (unintentionally) demonstrates how policy is being made without sufficient understanding of packet network performance. This paper contains many common fallacies about performance. These fallacies are fuelling misdirected conflicts over broadband regulatory policy. The underlying (false) assumption is that 'neutral' (aka 'non-discriminatory') networks exist. more

IPv6: SAVA, Ca va pas?

Sender Address Validation and Authentication (SAVA) is the silver bullet. It will send to Cyberia all dark forces that make us shiver when we make a purchase on the internet, pose a threat to our very identities and have made DDoS a feared acronym. Some of you will remember the heated debates when Calling Line Identification (CLID) was first introduced in telephony. Libertarians of all stripes called passionately to ban such an evil tool... more

IPv6 and Airline Tickets… Tales of Two Transitions

The internet bus continues to accelerate straight into the IPv4 address depletion wall with spirited discussions continuing on how to divvy up the remnants of the address space. Obviously all five Regional Internet Registries (RIR's) want to make sure they get their fair share from IANA but what is a fair share remains the subject of interpretation. In the mean time, scenarios of a speculative land rush and auctions of ever smaller address blocks abound with unattractive consequences such as an explosion of the size of the routing table and a stunted growth of the global internet economy... In the meantime, the airline industry completed a rather significant migration of their own... more

Ambient Connectivity: An Introduction

"Ambient Connectivity" is the ability to assume connectivity anywhere and anytime. Ambient Connectivity is the future of the Internet once we've removed the barriers we associate with today's telecom and extend the reach beyond the narrow confines of "broadband". The nuanced definition of Ambient Connectivity is that we can view connectivity as infrastructure but we need to take responsibility if we find ourselves disconnected. more

Should You Whitelist Your Vulnerability Scanning Service Provider?

Unlike consultant-led penetration testing, periodic or continual vulnerability scanning programs have to operate harmoniously with a corporation's perimeter defenses. Firewalls, intrusion prevention systems, web proxies, dynamic malware analysis systems, and even content delivery networks, are deployed to protect against the continuous probes and exploit attempts of remote adversaries -- yet they need to ignore (or at least not escalate) similar probes and tests being launched by the managed security service providers an organization has employed to identify and alert upon any new vulnerabilities within the infrastructure or applications that are to be protected. more

Why Broadband Speed Tests Suck

Everyone is familiar with broadband 'speed test' applications. When you have an ISP service quality problem, it is common to grab one of these tools to see if you are getting the service you feel you are entitled to get. Whenever you upgrade your broadband, the first thing you might do is to run a speed test. Then you can show off to your mates how superior your blazing fast service is compared to their pitiful product. more

Communications and the London Olympics

Communications will be one of the most critical areas during the London Olympic Games. The industry is working to establish shared access networks -- would it not be nice if they did this everywhere, all the time? They are also working very closely with British Olympic Association, London Transport, the broadcasters and content providers. Mobile coverage will be the biggest shared infrastructure in the world. more

Coordinating Attack Response at Internet Scale

How do we help coordinate responses to attacks against Internet infrastructure and users? Internet technology has to scale or it won't survive for long as the network of networks grows ever larger. But it's not just the technology, it's also the people, processes and organisations involved in developing, operating and evolving the Internet that need ways to scale up to the challenges that a growing global network can create. more