Networks

IPv6 Riding the LTE Coattails

In June 2009 we mused in these columns about Long Term Evolution standing for Short Term Evolution as wireless networks started to drown in a data deluge. It is January 2012 and we keep our heads above the mobile data deluge, even if barely, thanks to a gathering avalanche of LTE networks. Even the wildest prognoses proved conservative as the GSMA was betting on a more 'managed' progression...

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...

Advantage of Commercial Clouds vs. HPC for Scientific Research

The Department of Energy (DoE) recently came out with an excellent report, called the Magellan report, on the advantages and disadvantages of using commercial clouds versus in house High Performance Computers (HPC) for leading edge scientific research. The DoE probably supports the largest concentration of HPC facilities in the world. I agree with the report that for traditional applications such as computational chemistry, astrophysics, etc. will still need large HPC facilities.

Protecting Intellectual Property is Good; Mandatory DNS Filtering is Bad

It has been about six months since I got together with four of my friends from the DNS world and we co-authored a white paper which explains the technical problems with mandated DNS filtering. The legislation we were responding to was S. 968, also called the PROTECT-IP act, which was introduced this year in the U. S. Senate. By all accounts we can expect a similar U. S. House of Representatives bill soon, so we've written a letter to both the House and Senate, renewing and updating our concerns.

On the Success of Malware

There's often a lot of discussion about whether a piece of malware is advanced or not. To a large extent these discussions can be categorized as academic nitpicking because, at the end of the day, the malware's sophistication only needs to be at the level for which it is required to perform -- no more, no less. Perhaps the "advanced" malware label should more precisely be reattributed as "feature rich" instead.

Cloud Is the New Mainframe

Cloud computing, from a business and management perspective, has a great deal in common with mainframe computing. Mainframes are powerful, expensive and centralized pieces of computing equipment. This is in line with their role as infrastructure for mission-critical applications. For these types of applications, mainframes can be fairly efficient, even though they tend to need large teams of support specialists... Cloud computing is a new style of computing...

Limitations of Carrier Grade NAT, and Some Workarounds

Qtel, the largest carrier in Qatar (and nearly the only Internet provider) appears to connect all their users (~600K) to the Internet through just one or a very few public IPv4 addresses. 82.148.97.69 was their single public address in 2006-2007. How can network address translation (NAT) put all those users through just one IP address?

IPv6 Transitional Uncertainties

The telecommunications industry has been around for quite some time. Whether you take it as a starting date the first efforts with the wired telegraph in the 1830's, or the telephone in the 1870's, this industry has been around for quite a long time. During this periods it has made huge achievements, and there is no doubt that the impacts of this industry have changed our lives in many ways... It is literally amazing that this industry has managed to preserve dial tone on telephone handsets while completely changing the underlying network and switching fabric of the telephone system numerous times.

Is FttH Future-Proof Infrastructure?

Telecoms engineers from all of the major telecoms services and equipment companies around the world agree that FttH is the only future-proof telecommunications technology. So who should we trust - the technology experts or politicians with different agendas? If there had been a division of opinion among these experts it would have been necessary to investigate it; but if they are all in agreement it is safe to follow their advice.

FttH Is Not About High-Speed Internet Access - It Is About the Internet of Things

The future of our communications infrastructure will to a very large extent be based on the Internet of Things (IoT). What this means is that hundreds of millions of devices will be connected to the national broadband networks (NBN), gathering massive amounts of information and providing feedback in real time. In any single country, the electricity grid alone will have tens of millions of sensors and devices connected to deliver the energy efficiencies that we all so desperately need.