Networks

Occam’s ITRs

It's been a quarter of a century since the world's governments convened to draft up a common set of regulations about the conduct of international telecommunications. In December of 2012 the world's governments will convene to reconsider these regulations, to hopefully sign an updated set of regulations. This time around, this activity is generating considerable levels of public interest. Congressional hearings in the United States have been held, and various pronouncements of intent from various governmental, regional, and industry groups have been made. more

IPv4: Business As Usual

This year, we expect that the RIPE NCC's pool of unallocated IPv4 addresses will reach the "last /8", meaning that we have 16,777,216 IPv4 addresses left in the available pool. At that point it will no longer be possible for RIPE NCC members to obtain the amount of IPv4 addresses they will require to expand their current and future networks. When we hit the last /8, the RIPE NCC will only be able to distribute IPv6 addresses and a one-off allocation of IPv4 address space... Has this caused a last minute rush? more

Running DNSBLs in an IPv6 World

DNS blacklists for IPv4 addresses are now nearly 15 years old, and DNSBL operators have gathered a great deal of expertise running them. Over the next decade or two mail will probably move to IPv6. How will running IPv6 DNSBLs differ from IPv4? There aren't any significant IPv6 DNSBLs yet since there isn't significant unwanted IPv6 mail traffic yet (or significant wanted traffic, for that matter), but we can make some extrapolations from the IPv4 experience. more

Canadian Telcos Fast Tracking FttH to Combat Cable Operators

There are a number of stimuli which are pushing Canada's burgeoning FttH market, and the government and telcos alike have made significant steps to improve the reach and capacity of broadband infrastructure. These measures will show real benefits for consumers in recent years. From the government's side, its Economic Action Plan, launched in 2009 as a response to the global financial crisis, included a pledge to provide $225 million over three years towards its Broadband Canada Program, geared to extending broadband coverage to underserved communities. more

Spam from Mobile Networks? Who Woulda Thought…

Mobile networks aren't usually thought of as sources of spam, but a quick look at some of the resources that track spam reveals they actually are. This is counter intuitive at first glance because when most people think of mobile they think of smartphones, and those aren't known to be sources of spam (at least not yet). What's really going on is PCs connected to mobile networks with air cards, or tethered with a smartphone where it's permissible, are the culprits more

Business Case for IPv6 - Part 1

When discussing IPv6, it is easy to forget that we are ultimately talking about an enhanced version of an existing network protocol. Sure, it brings about a number of technical advantages. But when viewed in isolation - without a business case - there really are not that many drivers that would place IPv6 on the agenda of the top decision makers looking after budgets. For IPv6 to gain serious momentum, this has to be changed. more

BYOD Woes and Worries

Like the scene of a movie in which a biblical character holds back the mighty sea and is about to release the tide against his foes, BYOD has become a force of nature poised to flood those charged with keeping corporate systems secure. Despite years of practice hardening systems and enforcing policies that restrict what can and can't be done within the corporate network, businesses are under increasing (if not insurmountable) pressure to allow a diversifying number of personal devices to connect to their networks and be used for business operations. more

DNS Changer

One fine night in November 2011 I got an opportunity to get my hands dirty, working on a project for the United States Federal Bureau of Investigation (FBI). They were planning to seize a bunch of computing assets in New York City that were being used as part of a criminal empire that we called "DNS Changer" since that was the name of the software this gang used to infect a half million or so computers. more

IPv6 DNS Blacklists Reconsidered

I opined about a year ago that DNS blacklists wouldn't work for mail that runs over IPv6 rather than IPv4. The reason is that IPv6 has such a huge range of addresses that spammers can easily send every message from a unique IP address, which means that recipient systems will fire off a unique set of DNSBL queries for every message... Now I'm much less sure this will be a problem... more

Spectrum Key to Broadband Utility

The explosion in mobile communications in the developing world has created social and economic changes that have exceeded all expectations and predictions -- even those made as recently as five years ago. There are still countries lagging behind, but now is the time to move on to the next stage -- and that means broadband. Already the developed world is showing an enormous appetite for mobile broadband, so the demand is most certainly there. The rapid development of low cost Smartphone, projected to approach $50 soon... more

Growth in IPv6-Capable DNS Infrastructure

In our last post on CircleID we showed encouraging growth in the number of IPv6-enabled networks. But announcing an IPv6 prefix is only one of the first steps a network operator should take when deploying IPv6. For a full IPv6 deployment, IPv6 needs to be enabled on network infrastructure and made available to end users. One key piece of infrastructure for which we can measure IPv6 capabilities are DNS resolvers. more

The Top 3 Emerging Threats on the Internet

Last week at RSA, Bruce Schneier gave a talk on the top 3 emerging threats on the Internet. Whereas we in the security field usually talk about spam, malware and cyber crime, he talked about three meta-trends that all have the potential to be more dangerous than the cybercriminals. Here are my notes. more

MegaBust’s MegaQuestions Cloud the Net’s Future

Mid-January 2012 marked a major inflection point for digital copyright policy in the United States... Yet no one involved with Congressional interaction on either side of the issue believes it has been sidetracked for long, and "Hollywood" and "Silicon Valley" are both plotting their next moves in this high-stakes game to further define the responsibilities and potential liabilities... The resolution of this dispute will determine the ability of Internet services to move to "the cloud"... more

Carriers Skirting Rules on Network Neutrality vs. Free’s Innovative Network

From will they ever learn department, we are once again seeing attempts by incumbent carriers to skirt rules around network neutrality. They tried and failed with UBB. Now they are at it again with "speed boost" technologies. The two technologies at question are Verizon's "Turbo" service and Roger's "SpeedBoost". more

Cloud Computing’s Concealed Complexity

James Urquhart claims Cloud is complex - deal with it, adding that "If you are looking to cloud computing to simplify your IT environment, I'm afraid I have bad news for you" and citing his earlier CNET post drawing analogies to a recent flash crash. Cloud computing systems are complex, in the same way that nuclear power stations are complex - they also have catastrophic failure modes... more