The internet is a complex distributed process in which computers interact with one another over pathways that introduce delays and errors. There are many feedback loops. Some of those loops are simple to identify, such as the handshaking between the end points of a TCP connection. Other loops are harder to identify, such as the interaction of timers in ARP (address resolution), DNS (domain name system), and routing protocols (such as OSPF and BGP.)
Positive feedback loops are often merely annoying. But they can also cause more severe problems, such as connectivity failures.
The Washington Post recently published an article: "SpaceX wants to beam the Internet down to Earth. Here's How it will Start."
IWL believes the article doesn't give the whole story.
SpaceX is not proposing anything that is particularly new.
Low Earth Orbit (LEO) satellite networks have been around since the 1990's. There was Iridium and the former Soviet Union had a LEO satellite network for voice calls to remote locations (like Siberia).
About a year ago we begin switching our various websites to use content management systems (CMS) that did not require SQL databases, or any database for that matter. We looked at GRAV and Hugo. The latter is highly portable and very fast, but for our more dynamic websites we decided to use GRAV.
In general we have been quite happy with GRAV, but recently we encountered a problem in which users began to see "Gateway Timeout" errors.
We dug into the issue - and found a solution.
The Trump Administration proposes to "pause" and review an Obama-era program designed to improve wage transparency -- so women and minorities could learn how their compensation stacked up to white men. The Trump administration argues that the government's pay data collection process is "unnecess...
In June 2017, IWL Staff attended a fascinating lecture by Dr. Jess McIver of CalTech titled "Einstein Gravitational Waves and Black Holes". Dr. McIver described the operation of the LIGO project for detecting gravitational waves. https://www.ligoproject.org/
So when an article appeared on the h...
There's an old joke. It was said that English automobiles of the 1950's came equipped with a walnut inlayed toolbox containing many hammers. These ranged in size from a small jeweler's hammer up through a heavy, concrete shattering, sledge. It was said that when something in the automobile stopped working that one should begin by pounding on it with the smallest hammer. If that didn't solve the problem then one should move up to the next larger size. And so on, using ever larger hammers, until the sledge, which would reduce the automobile to a heap of shattered parts that could easily be hauled away – because the original problem was obviously insolvable.
Fuzz testing of software is somewhat like that old English automotive technique, but often without the benefit of an orderly sequence.
The question of “how many bits” were sent and received clearly is a matter of interest when measuring data rates or data quantities.
Mobile providers, consumer ISP's, consumers, and regulators talk a lot about their speed and (not so often) about their data caps. But rarely, if ever, are sufficient details provided:
And it is not just a consumer issue: ISPs that exchange data with one another under contractual peering and transit arrangements need common ground when they discuss how much data each party is delivering to the other.
All of the IWL staff has worked long and hard on perfecting our TLS Test Suite! Our clients — DevSecOps engineers — use it to find bugs and security vulnerabilities in apps and devices before deployment. Once they’ve identified these problems, the problems are corrected and retested prior...
Last month I received a number of fun and friendly birthday wishes on Facebook. Though this was a sweet and kind gesture by each of the well-wishers, I felt guilty. That’s because … it was not my birthday! Facebook thinks my birthday is June 22, 1910, but the day, the month, and the year are all wrong.
So you may wonder: Why would I intentionally lie about my birthday on Facebook?
Women who work in automotive technology met at the British Bankers Club in Menlo Park last night for a lively discussion. The women represented many facets of the industry — research scientists at the major automotive companies, new infotainment and VR startups, regulatory and compliance lawyers,...
Often when we read news stories, we find them lacking any technical substance. It would seem that the writer aborted the story before asking any interesting questions that would allow us, as technical professionals, to fully understand the story and draw our own conclusions.