Blog for Technologists

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 [...]

Written by Terry Slattery and Dan Wade Every network eventually gets a hardware refresh and automated testing can verify that a site is fully operational after the new hardware and [...]

This blog discusses a problem that several of my NetCraftsmen peers and I are seeing. Once I explain, I’ll leave it up to you: Is this phenomenon real? Is it [...]

This is the eighth in a series of blogs, the DNAC Instant Demo tour. Prior blogs in this series: DNAC Tour Part 1: Introduction to Cisco DNA Center DNAC Tour [...]

This is the seventh in a series of blogs, the DNAC Instant Demo tour. Prior blogs in this series: DNAC Tour Part 1: Introduction to Cisco DNA Center DNAC Tour [...]

This is the sixth in a series of blogs, the DNAC Instant Demo tour. Prior blogs in this series: DNAC Tour Part 1: Introduction to Cisco DNA Center DNAC Tour [...]

This is the fifth in a series of blogs, the DNAC Instant Demo tour. Prior blogs in this series: DNAC Tour Part 1: Introduction to Cisco DNA Center DNAC Tour [...]