Networks

CIDR in Networking: Improved IP Routing Efficiency

CIDR (Classless Inter-Domain Routing) is a routing system in which network engineers can distribute IP addresses based on the size of their specific network. This is more efficient than the previous system, which assigned IP addresses depending on whether the size of a network fits into one of only three sizes: Class A, Class B, and Class C. more

The Early History of Usenet, Part VIII: The Great Renaming

The Great Renaming was a significant event in Usenet history since it involved issues of technology, money, and governance. From a personal perspective -- and remember that this series of blog posts is purely my recollections – it also marked the end of my "official" involvement in "running" Usenet. I put "running" in quotation marks in the previous sentence because of the difficulty of actually controlling a non-hierarchical, distributed system with no built-in, authenticated control mechanisms. more

Take IP Address Management Seriously; Your Business Depends on It

Let's start by stating the obvious: All business communications depend on IP addresses. Without an IP address, you simply can't communicate over the network. No IP address means no access to your email server, no access to your website, and no cell phone or VoIP access. So much for the new VoIP system installed last month. What does that mean to you? more

GlavMed Hacks U.S. Government Website

Garth Bruen writes: A report in LegitScript takes a look at Russian rogue Internet pharmacy hacking US government website. "As rogue Internet pharmacy networks become more sophisticated, even US government websites are at risk. Today, we're taking a look at how a rogue Internet pharmacy linked to a criminal network operating out of Russia and Eastern Europe has hacked into a US government website. The Millennium Challenge Corporation, a US foreign aid agency, utilizes a ".gov" top-level domain, which is assigned to the control of the US government. Domain names ending in .gov are typically administered by the General Services Administration." more

China and Taiwan to Lead the Development of 4G

China missed out on playing a leadership role in the development of 3G and as we predicted at that time, China would most certainly start looking at 4G for a major involvement in developing the technologies for it. more

In a Networked World Knowing the Right Time Is Essential but How Accurate Are the Computer Clocks?

Computers have always had clocks. Well maybe not clocks as you might think, but digital computers have always had oscillators, and if you hook the oscillator to a simple counter then you have a clock. The clock is not just there to tell the time, although it can do that, nor is it there just to record the time when data files are created or modified, though it does that too. Knowing the time is important to many functions, and one of those is security. more

Just One Bit

I'm never surprised by the ability of an IETF Working Group to obsess over what to any outside observer would appear to be a completely trivial matter. Even so, I was impressed to see a large-scale discussion emerge over a single bit in a transport protocol being standardized by the IETF. Is this an example of a severe overload of obsessive-compulsive behaviour? Or does this single bit represent a major point of design principle... more

OIAC Report: Views on Economic Impacts of Open Internet, Mobile Ecosystems, Specialized Services

Having been a member of the Committee for this past year, I'm pleased to share that the US Federal Communications Commission (FCC) "Open Internet Advisory Committee" has published its first annual report... The report is weighty - 98pp if you kill trees to print it. The OIAC was established as part of the US FCC Open Internet activity and Open Internet Report and Order from 2010. The FCC appointed expert committee members from a broad range of commercial, academic, and not-for-profit organizations. more

If It Doesn’t Exist, It Can’t Be Abused

A number of outlets have reported that the U.S. Post Service was hacked, apparently by the Chinese government. The big question, of course, is why. It probably isn't for ordinary criminal reasons: The intrusion was carried out by "a sophisticated actor that appears not to be interested in identity theft or credit card fraud," USPS spokesman David Partenheimer said. ... But no customer credit card information from post offices or online purchases at usps.com was breached, they said. more

The Google Factor in the Obama Broadband Speech

Every time Google becomes involved in telecommunications it gets international media coverage; and every single time the same question is raised -- why does Google become involved in telecoms infrastructure, plus the underlying issue of it becoming a telecoms operator. This time the question is -- why does Google want to become involved in mobile telecoms and how is it going to compete with the other operators? more

Matching Apps to Network Access - A Postage and Packaging Problem

A number of conversations have recently converged on a single problem: how to match applications to network access. Let's unpeel this issue... When I was Chief Analyst at Telco 2.0, we proposed there was a significant untapped market opportunity for network operators to bundle together access with content, applications or services. The revenue opportunity is to charge the providers of those services for delivering fit-for-purpose data at bulk wholesale prices. This is the "postage problem"... more

Nerd Knobs and Open Source in Network Software

Tech is commoditizing. I've talked about this before; I think networking is commoditizing at the device level, and the days of appliance-based networking are behind us. But are networks themselves a commodity? Not any more than any other system. We are running out of useful features, so vendors are losing feature differentiation. This one is going to take a little longer... more

The Value of Community Broadband

There are many voices calling for increased initiatives by municipalities to build and operate broadband internet infrastructure as a public utility, but until this week, very little in the way of economic analysis to fully examine whether the benefits justify the costs. A paper released this week finds that local efforts produce small economic benefits, but cause a notable increase in the size of local government. more

Defending the Network Several Times Over

Modern networks can be attacked in a variety of ways, meaning that companies need different types of protection. This article explains some of the risks involved, and provides some easy ways to deal with them. more

Looking Back on 2012: What’s in our Rearview Mirror?

Well, 2012 is almost over, and we can now reflect on the major events that hit our industry this year. If I had to choose the top three trends from the past 12 months, they would have to be: 1. Over-the-top (OTT) services; 2. IPv6 deployments (finally!); 3. TR-069 adoption. Let's examine each of these in more detail. more