Networks

Who Uses Google’s Public DNS?

Much has been said about how Google uses the services they provide, including their mail service, their office productivity tools, file storage and similar services, as a means of gathering an accurate profile of each individual user of their services. The company has made a very successful business out of measuring users, and selling those metrics to advertisers. But can we measure Google as they undertake this activity? How many users avail themselves of their services? Perhaps that's a little ambitious at this stage, so maybe a slightly smaller scale may be better. Let's just look at one Google service.

IP Addresses and Traceback

This is an informal description the evolution of a particular area of network forensic activity, namely that of traceback. This activity typically involves using data recorded at one end of a network transaction, and using various logs and registration records to identify the other party to the transaction. Here we'll look at the impact that IPv4 address exhaustion and IPv6 transition has had on this activity, and also note, as we explore this space, the changing role of IP addresses within the IP protocol architecture.

Watch Live - What Does “Success” For IPv6 Look Like? (Briefing Panel on Nov 5)

Now that IPv6 deployment is happening in major networks around the world, the question becomes -- what does "success" look like for IPv6? How much IPv6 traffic is "enough"? What are major milestones we should be tracking in IPv6 deployment? What is next for IPv6?

Highlights from SCTE Cable-Tec EXPO

As a product manager and engineer, I really enjoy attending the technology-oriented Cable-Tec Expo each year. It has a stronger technology focus than many other industry trade shows and it's always a good opportunity to talk to the engineering teams from all of the operators and vendors.

DNS Tunneling: Is It a Security Threat?

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.

The Big Bad Internet

I often think there are only two types of stories about the Internet. One is a continuing story of prodigious technology that continues to shrink in physical size and at the same time continue to dazzle and amaze us... The other is a darker evolving story of the associated vulnerabilities of this technology where we've seen "hacking" turn into organised crime and from there into a scale of sophistication that is sometimes termed "cyber warfare". And in this same darker theme one could add the current set of stories about various forms of state sponsored surveillance and espionage on the net.

The Internet and OpenStand: The Internet Didn’t Happen by Accident

On the World Standards Day of 2013 it seems appropriate to recognize that on the Internet and throughout the Web, nothing goes anywhere without standards. These technical standards - communication protocols, data exchange formats, and interfaces - allow different computers and networks to talk to each other. They are the lifeblood around the world for multibillion dollar industries that didn't exist 20 years ago. They are born of a collaborative, open process that prides itself on technical expertise and measures success by the depth and breadth of their acceptance across a hodgepodge of vastly different technologies all interconnected to what we euphemistically call "the Global Internet."

Filtering the Internet Is Still a Bad Idea: DCA, ABC, and Steroid Searches

A few days ago, ABC News ran an "investigative" piece called "Group Probes Ease and Danger of Buying Steroids Online." ABC describes the "group" at issue as "an online watchdog," the Digital Citizens Alliance. That group determined that some of the millions of available YouTube videos encourage steroid use and that YouTube (which is owned by Google) places ads next to steroid-related videos and search results. They argue that Google and YouTube should be held legally responsible for any illegal content linked or posted.

VDSL Cabinet Consideration for FttN Roll Outs

Australia will be an interesting test market for VDSL. With a new government and the broadband infrastructure company NBN Co basically in agreement, it is most likely that VDSL will be used to bring for example fast broadband to multi-dwelling units (MDUs). It was mainly for political reasons that the previous government stopped NBN Co deploying the VDSL technology in MDUs for this purpose. Whether or not any more VDSL will be deployed beyond that will largely depend on the NBN Co review of its current plan.

Life Outside IPv6 (Poll)

Within every organization a chosen few are tasked with introducing IPv6 into their networks, outward facing services or applications. But who are they? We know them as Network Engineers, System Administrators and Software Developers but are they one trick ponies spending all their time in layer 3?