Our Blog

About networking, security, and public cloud. Technical walkthroughs, certification guides, and product reviews.

Certification Posts

We both have several IT certifications from Cisco, AWS, GCP, F5, and CompTIA. We’re always are having to learn new things for our career. Check out some of our tips and guides for passing these certifications.

GNS3 Posts

We’re are network engineers at heart and we love GNS3. It’s a super useful tool for studying for Cisco and other networking vendor certifications. Check out our guides that can help you run large networking simulations smoothly and efficiently.

Other Posts

We’ve learned alot from our experiences working at hosting providers and professional services organizations. Check out some of our posts and let us know what you think.

GCP | Google Certification Overview

I had little experience with GCP but over the past couple of months, I’ve obtained 4 GCP certs. I’d like to share the resources I used to accomplish this.

F5 Networks | F5 201 Exam Study

F5 201 Summary Passing the F5 201 Exam will get you the F5 Certified Administrator (F5-CA, BIG-IP) certification. This exam is definitely passable if you have working knowledge of the F5 platform, hands on experience with day to day administration, and knowledge...

F5 Networks | F5 Certified Administrator

F5-CA Summary If you've followed my supplemental study guides for 101 and 201 and passed the exams then you should've received a certificate that looks quite similar to the one above. You are now F5 Certified and can start your journey onto higher level...

F5 Networks | F5 101 Exam Study

F5 101 Summary The F5 101 Exam is the entry point to the F5 Networks certification program so it will be the 1st exam you take. This exam is fairly easy if you already have a solid networking background and some day to day experience managing F5's. Having recently...

AWS | AWS Certification Overview

Introduction Amazon Web Services is the largest cloud provider at the time of writing. It is widely used and powers many application around the globe. It can be difficult to break into cloud computing especially when coming from a traditional IT environment. The AWS...

F5 Networks | F5 Certification Program Overview

While I have been working with F5 products for many years and have helped with certification material, I myself have never held an F5 certification. The change in job necessitated acquiring the F5-CTS LTM within the next few months so the dash to certification has...

GNS3 | Docker and GNS3 on Windows

In this article I will cover how my Workstation is setup to run GNS3 on a dedicated Server VM that I also use for Docker. Unfortunately some of my clients require me to have Windows tools available and running Windows in a VM on linux typically is a less than good...

GNS3 | FMCv Setup

The Cisco FMC (Firepower Management Center) is a distributed management GUI for controlling a large number of FTD appliances. This is how Firepower is going to be managed rather than individually in large scale deployments. We can use this in our GNS3 simulations,...

GNS3 | FTDv Setup

GNS3 Cisco Firepower Summary The Cisco Firepower is the next generation Firewall from Cisco superseding the ASA. This firewall has some additional functionality over the ASA including advanced inspection and IPS/IDS like functionality. We can use the Firepower in our...

GNS3 | ASAv Setup

GNS3 ASA Summary The Cisco ASA is a very popular firewall that we can use in our GNS3 simulations in the form of the Cisco ASAv. The Cisco ASAv can be resource intensive so we will want to limit it's use on weaker hardware. ASAv will run under KVM requiring either a...

GNS3 | GNS3 Docker Appliances

GNS3 Docker Summary GNS3 Docker appliances are the easiest to import into GNS3 as they are simply pulled from the Docker Hub. Once you have the appliance file from the GNS3 Registry you can simply import it and go. Below we will cover importing some of the more useful...

GNS3 | VyOS Appliance

GNS3 VYOS Summary Now that we have GNS installed on a system we need to populate it with appliances before we can get to running simulations. Since we will need routers to move our packets around there's no better place to start than the open source routing appliance...

GNS3 | GNS3 Linux Installation

GNS Linux Install Summary In this article I will cover installing a GNS3 Linux installation on an Ubuntu 18.04 based desktop/workstation. This is going to be performed on a fresh install on my Linux SSD drive that I use specifically for GNS3. GNS3 Linux System Prep...

GNS3 | GNS3 Overview

GNS3 Intro I've found GNS3 to be an extremely useful tool that allows you to simulate just about any scenario assuming you have enough compute resources available. In this article we'll go over what GNS3 is, where it can be useful, and my preferred deployment methods....

Namecheap | Domain Registration Review

Namecheap provides excellent services at a low price. We’ve been a happy customer ever since we started with them.

Cloud Networking | Using VPC Peering and Cloud VPN

VPC Overview VPCs (VMNet on Azure) are the core components of cloud networking within public cloud. A VPC is a completely isolated network (comprised of sub-networks) from other cloud tenants and even other VPCs within the same account. Connecting VPCs together is a...

Cloud Networking | Cloudflare Firewall Considerations

CDN Benefits People expect websites to load quickly and typically don't stick around too long if a site takes more than a couple of seconds to load. CDNs can help with this by significantly speeding up your page load time. They are able to cache your content and have...

F5 Networks | AFM Firewall Order

F5 AFM Summary The F5 AFM Firewall module is very different from your typical network firewall. It gives the end user much flexibility on how they can configure firewall features but it can also be confusing. Understanding the filtering order is the first step to...

F5 Networks | AFM Introduction

F5 ASM Summary The F5 AFM module enables the network firewall available on the F5 BigIP load balancer. Without using AFM, your only options to firewall on the F5 are to setup either packet-filters or through iRules. I would not recommend using packet-filters due to...

F5 Networks | F5 Optimization Intro

F5 Optimization Summary I've seen quite a few F5 deployments where engineers assume that the default profiles are going to be sufficient. While they will get you up and running they are from ideal as noted by engineers from F5. This mainly has to do with the full...

F5 Networks | F5 Reverse Proxy Architecture

Introduction You probably have heard of vips or virtual ip addresses if you've been exposed to F5 products. You may have heard the terms proxy or reverse proxy as well. If your not sure how vips work or what a reverse proxy is then this article can help. We will...

F5 Networks | F5 Best Practices

F5 Best Practices Intro I've spent a few years now working almost exclusively with F5 load balancers. Understanding how to securely manage an F5 Load Balancer, also commonly known as a BigIP, is very important. I've seen a number of base configurations simply...