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The network operations community is cautiously heading back into a mode of in person meetings and the NANOG meeting at the start of November was a hybrid affair with a mix of in-person and virtual participation, both by the presenters and the attendees. I was one of the virtual mob,…
It has often been said of technology standards that the good thing is that there are just so many to pick from! The same is true, to perhaps a more limited extent, in the world of cryptography. The choices may not be quite so diverse, but there are still many…
When we deregulated the telephone industry, we replaced these national monopolies and their vertically bundled structures with a collection of separate enterprises whose actions are orchestrated by market forces rather than by the dictates of the incumbent monopoly telco. This was a comprehensive upheaval to the telecommunications industry, and one…
When did the Internet begin? It all gets a bit hazy after so many years, but by the early 1970’s research work in packet switched networks was well underway and while it wasn’t running TCP at the time (the flag day when the ARPANET switched over to use TCP was…
Let’s look at the operation of DNSSEC and its use of public key cryptographic algorithms. The DNSSEC specification does not define in advance which algorithm you should use to generate the digital signature records for a DNSSEC-signed zone. And that’s a very good thing. The issue here is that cryptographic…
It was only a few weeks back, in July of this year, where I remarked that an Akamai report of an outage was unusual for this industry. It was unusual in that it was informative in detailing their understanding of the root cause of the problem, describing the response that…
The telephone network had a remarkably clear overriding service objective: It had to sustain a human conversation. Now this must be able to carry a signal which is a human voice. To be discernible to human listeners, its necessary to carry audio frequencies of between 300 and 3,500 Hz. Most…
United States President Biden has recently commented: “But let me be very clear: Capitalism without competition isn’t capitalism; it’s exploitation. Without healthy competition, big players can change and charge whatever they want and treat you however they want. […] So, we know we’ve got a problem — a major problem.”…
These are some notes I took from the DNS OARC meeting held in September 2021. This was a short virtual meeting with six presentations, but for those of us missing a fix of heavy-duty DNS, it was very welcome in any case! DNS Security Mechanisms There isn’t a single approach…
Am I really talking to you? In a networked world that’s an important question. For example, where I’m located, when I look up the DNS name www.google.com I get the IPv6 address 2404:6800:4006:813::2004. This implies that when I send an IPv6 packet to this destination address I will reach a…
