Posts

Showing posts with the label security

Firewalls and the Need for Speed

Image
I was looking for resources on campus network design and found these slides  (pdf) from a 2011 Network Startup Resource Center presentation. These two caught my attention: This bothered me, so I Tweeted about it. This started some discussion, and prompted me to see what NSRC suggests for architecture these days. You can find the latest, from April 2018, here . Here is the bottom line for their suggested architecture: What do you think of this architecture? My Tweet has attracted some attention from the high speed network researcher community, some of whom assume I must be a junior security apprentice who equates "firewall" with "security." Long-time blog readers will laugh at that, like I did. So what was my problem with the original recommendation, and what problems do I have (if any) with the 2018 version? First, let's be clear that I have always differentiated between  visibility and control . A firewall is a poor visibility too...

Suggestion for Interviewing Technical Hires

Image
Thanks to a Tweet by Peter Singer, I read an article at Forbes titled  Maldrone: Watch Malware That Wants To Spread Its Wings Kill A Drone Mid-Flight . This article is interesting in its own right, but it linked to a late 2013 project by Samy Kamkar called SkyJack . Samy's project links to a video  where he describes software  that enables a Parrot drone to "autonomously seek out, hack, and wirelessly take full control over any other Parrot drones within wireless or flying distance, creating an army of zombie drones under your control." That is all really cool by itself. However, when watching the video, I realized that it incorporates many different elements of IT and security. Samy put many different tools, tactics, and hardware to work in order to accomplish his drone hijack goal. I began to wonder what it would take for someone to follow along and understand each step of the process. I remembered the sorts of questions my leadership team and I used to ask of ...