Blog for Technologists

I try to think outside the box at times. Perhaps a bad habit, waste of cycles. This is a quick note with some thoughts (crystal ball time). Possibly provocative or [...]

Note: This blog was originally published in January 2017 and has been updated. “No man is an island.”  – John Donne This is from a famous poem (Devotions upon Emergent Occasions) [...]

This blog is an update on what the recent startup Graphiant brings to WAN networking. See also the launch blog from NFD29. From what I hear, Graphiant is growing by [...]

A recent blog was titled Doing IP Addressing Right. This blog does something similar for IP Routing. TL;DR: What are some goals for IP routing, common approaches, and how do [...]

Two of my daughters are twins, and they’re active online, so they are arguably digital twins. However, this blog will not be about them. TL;DR: Like other phrases that people [...]

In my years of consulting, I’ve run across some interesting IP addressing schemes. “Interesting” as in “yuck” or “hot steaming mess.” You may have too. In fact, you may have [...]

NetCraftsmen is currently working with a customer with some interesting problems. I’d like to share some thoughts and lessons learned. Cheap Is Sometimes Not This first item is arguably obvious, [...]

The blogging part of my brain seems to be stuck on security lately. Apparently because somewhat similar topics keep coming up in discussions with customers or my NetCraftsmen peers. This [...]

I’d like to share a trick I’ve found useful in building a lab to validate configurations. Plus, one other trick that might even be useful in production. The hope is [...]

I recently spent some time researching a moderately sophisticated phishing attempt initiated via physical mail. Heads up: (short version of the gotcha): bad people creating a number (30?) of online [...]

A reader commented on a prior blog, suggesting I write about the title question. I liked the idea, and the resulting words (thoughts) follow. Suggestions for other topics are always [...]

A previous blog, Do You Know Your Flows? discussed figuring out what flows are in your network (network edge, etc.). And the time challenges that can present. It also lightly touched [...]