Articles
A Technical Look at IPSEC VPN Tunnel Creation
Explore the IPSEC VPN tunnel creation process, including "Phase 1" and "Phase 2," how Security Associations are impacted when ACLs identify "interesting traffic," and even the packets involved in the communications.
Exploring Default Docker Networking
Part 1
Learn Docker networking starting with the three options every network engineer should know. Principal Engineer Hank Preston provides a step-by-step walkthrough of the default Docker bridge network environment in Linux, Docker container networking, and much more.
Influencing Forwarding Behavior with Policy Based Routing
Learn how to configure policy-based routing to influence forwarding behavior in this step-by-step overview with Hank Preston, Principal Automation Engineer.
Be on Guard This Spooking Spanning Tree Season
Take the scare out of spanning tree with a strong foundation in practical network design and configuration practices. You never know when it might come back to haunt you, just like in Hank's spooky story.
Exploring Default Docker Networking
Part 2
In the second installment of the default Docker networking series, Principal Engineer Hank Preston continues his exploration into layer 3 (network), shining the light on how container network traffic is routed, NATed, and filtered.
Exploring the Linux ‘ip’ Command
It's the skill every network engineer needs. Learn how to use the “ip” command to explore the network configuration of a Linux system.
Reflections on the Journey to DevNet Expert
Walk down memory lane with Principal Engineer Hank Preston, as he shares his personal journey in bringing the DevNet Expert certification to life.
Learning the Skills to Build the Learning Platform
You know that movie about dreaming within a dream within another dream? Well, that kind of inception world is what I think about whenever I take one of the Cisco Learning Courses to learn something I need to know to work on the platform that hosts those same courses. It blows my mind every time! […]
5 Reasons a Raspberry Pi Belongs in Your Network Lab
It's not just for Pi Day! From Pi-powered network services to a network sensor/traffic analysis device or home lab management station, the Raspberry Pi is a flexible workhorse that should be the next worthy addition to your lab.
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