L2 Basics: Spanning-Tree Protocol

Matt/ November 14, 2017

Spanning-tree protocol (STP) is one of those network technologies that is easy to forget about. It exists in the background of almost every network, and for the most part it does it’s job without any issues. However, there is still a huge benefit to understanding what STP does and how it works – because it’s default behaviors might not the

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An Afternoon with ARIN

Matt/ November 7, 2017

I had the opportunity to attend an ARIN on the Road event last week. It was an all-day event that focused on education: who ARIN is, what they do, and some things they are working on. As a network admin I’ve had to work with ARIN a handful of times to request network resources. I figured it would be a

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How to: Migrating to a New Synology NAS

Matt/ October 24, 2017

Back in 2011 I picked up a Synology DS411 NAS, which has proved to be one of the most beneficial parts of my home lab. When I purchased it, I filled it with 4x 3TB drives for a total of 12TB of storage (~8TB usable with RAID5). I use the NAS as an iSCSI datastore for my home ESX hosts,

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Review: Amazon LightSail

Matt/ October 17, 2017

Disclaimer: I’m not at all sponsored by anything I review on here. If there ever comes a time where someone is crazy enough to sponsor a review, I’ll definitely let you guys know I’ve been considering the idea of posting some short reviews of products or services I use. Not at all meant to make this a review site, but

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My 2018 Goal: CCIE R&S

Matt/ October 10, 2017

I first completed my CCNA certification back in August of 2007. After that I started working on certifications pretty heavily, because I wanted to learn as much as I could about networking. I used the certifications as both motivation to learn and a measurable goal of my knowledge. Over the next few years I obtained a number of Cisco’s associate-level

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Devil in the Defaults

Matt/ October 3, 2017

Default settings are the worst. Every systems has them, and they’re great until they’re not. For whatever reasons in the past, my predecessors decided to purchase a bunch of bare-bones HP servers and install Check Point’s firewall software on them. The HP servers were significantly cheaper than buying Check Point’s branded appliances, but unfortunately they come with a different set

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SRX High CPU: httpd

Matt/ September 5, 2017

Over the past few years of my Juniper SRX adventures, I’ve run into a few cases where the Routing Engine (RE) CPU is pegged at 100%. From what I’ve seen so far, this is typically one of three causes: high traffic (spike in IPS inspection), logging using event mode, or a stuck web management session. In a few occasional cases,

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Ten years of Cisco Certification

Matt/ August 29, 2017

It’s August of 2017 – which means it’s been a long ten years since I originally obtained by CCNA certification in 2007. I figured it might be a good time to take a minute and look at what that has meant for me, and how the last ten years of my career have gone. When I got my CCNA certification,

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Odd Behavior of Protected Switchports

Matt/ August 22, 2017

I ran into an interesting issue recently, which was caused by use of the switchport protected command…. So I use a pair of Cisco 2960-8TC-L switches at home, for both my home network and lab. A few months back I ran a bunch of ethernet cabling within my house, which all terminated in a patch panel in the basement. I was able

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SRX Basics: Redunancy Groups and Failover

Matt/ July 18, 2017

In last weeks post, we took a look at how to set up a chassis cluster on a Juniper SRX Firewall. So now that we have a basic cluster setup – Let’s explore some of the additional options and configuration items. Redundant Ethernet Interfaces So first thing is first – Once you have a cluster configured, you’ll probably want to

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