Cisco DMVPN Configuration Guide

DMVPN was next on my list to begin looking into for my CCIE exam so I decided to get a brief intro to the technology today as I sit here sick at with two...

Basic Cisco IPv6 EIGRP Configuration

This was a random video I put together this morning. I was testing out some screen recording software for the future and figured I'd do something useful. This is a video walkthrough of a...

5.3.a (i) HSRP, GLBP, VRRP

Overview In a business environment, there is something that is very valuable and a non-negotiable. That would be uptime. How do you achieve a great uptime? With redundancy. That is what this article will focus...

Quick Guide to Administrative Distance

The textbook definition of “administrative distance” is simple enough: “the measurement of a protocol’s believability”. It’s not enough to know the definition, however you’ve got to know when AD comes into the picture and...

Asymmetric NAT rules matched for forward and reverse flows

I was configuring a basic VPN configuration on my home Cisco ASA firewall so I could monitor a few things locally on my network while I was out with my iPhone. Being a Friday...

Cisco ASA 9.4 – Policy Based Routing

It has finally happened: policy based routing is available for the Cisco ASA platform. This comes about from the new version 9.4 of the ASA software. While a lot of the time policy based...

Nat-Traversal (Nat-T) Clarification

There was a recent lab I was working through where Nat-T was the main focus. Basically there was a firewall behind the internet router. It looked a little something like this, but sub our...