Understanding Rowhammer

31 July 2015 | Comments Off on Understanding Rowhammer

As I learned in my early days in electronics, every wire is an antenna. This means that a signal in any wire, given enough power, can be transmitted, and that same signal, in an adjacent wire, can be received (and potentially decoded) through electromagnetic induction (Rule 3 may apply). This is a major problem in…

Testing to the Cut Score (Certifications)

29 July 2015 | Comments Off on Testing to the Cut Score (Certifications)

Tom has an interesting post over at The Networking Nerd on one of my favorite areas of discussion — certifications. To give you a sense — Perhaps raising the cut scores to more than 900 points isn’t the answer. Maybe instead more complex questions or more hands-on simulations are required to better test the knowledge…

Good Enough

27 July 2015 | Comments Off on Good Enough

Looking at my desk in the late 1990’s, that little haven where I came in early in the morning, and left ealry’ish in the afternoon, you’d see a catalog rack. Only it wasn’t full of catalogs, it contained a full set of the latest Cisco IOS documentation. We whined when a new version of the…

Saving the Web, Saving Community (Heavy Topic Warning)

22 July 2015 | Comments Off on Saving the Web, Saving Community (Heavy Topic Warning)

Is the ‘web losing it’s populist (and/or democratic) spirit? Hossein Derakhshan, at least, thinks so. he argues that the ‘web is dying because the hyperlink is dying — The hyperlink was my currency six years ago. Stemming from the idea of the hypertext, the hyperlink provided a diversity and decentralisation that the real world lacked.…

On being different

20 July 2015 | Comments Off on On being different

The METNAV shop at McGuire AFB was hard to miss, if you could get into the right area, and you know what you were looking for. Out across the flightline, across the old 18 runway, and across a winding series of roads, a small squat building sat — no antennas or other identifying marks. Just…

Commercializing Community

16 July 2015 | Comments Off on Commercializing Community

No online community with a collective identity has successfully become a large business like the segregated, follower-based communities of Facebook, Instagram, Twitter and Youtube. Strangely, it is the retailer Amazon (proprietor of acquired communities Twitch, Goodreads, IMDB and DPReview) who has the most sophisticated understanding of collective identity online communities of any modern mega-corp. C.S.…

False Dichotomy

13 July 2015 |

Last week wasn’t a good one for the cause of network engineering. United Airlines grounded flights because of a router failure, the New York Stock Exchange stopped trading for several hours because of a technical problem, and the Wall Street Journal went off line for several hours due to a technical malfunction. How should engineers…

Why certifications make me grouchy

7 July 2015 |

While I support certifications, they also make me grouchy. Sometimes they make me really, really, grouchy, in fact — probably more grouchy than I have a right to be. You’ve probably heard the complaints a number of times. For instance, there’s the problem of paper tigers, people who gain the certification but don’t have any…

SD-WAN and Multiple Metrics

6 July 2015 | Comments Off on SD-WAN and Multiple Metrics

Ivan has posted a reaction to Ethan, which prompts me to… Okay, let’s start at the beginning. Ethan wrote a nice post on SD-WAN and the “shortest path we always wanted,” covering some of the positive and negative aspects of software defined WAN. Ivan responded with this post, in which he says several interesting things,…

The Tinker and the Geek: Information Technology

1 July 2015 | Comments Off on The Tinker and the Geek: Information Technology

Imagine you’ve just woken up and found yourself in a small kingdom someplace in Europe around 1200 AD. You wander outside, interested in your surroundings, and find yourself in the middle of a fair. Taking stock, you see a man standing in a tent across the way who appears to be tapping on something with…