I have been very lucky in my career to date. Over the years I have been given the privilege of working in some great roles which I have thoroughly enjoyed. But perhaps it’s not luck which has helped me get these roles? In this blog post I’ll explain my attitudes towards work in the hope that it helps you land your dream job too. While the trait...
Below is a list of all the posts in the “Subnetting Made Easy” series: Subnetting Made Easy, Part 1 Subnetting Made Easy, Part 2 Subnetting Made Easy, Part 3 Subnetting Made Easy, Part 4 Subnetting Made Easy, Part 5 Subnetting Made Easy, Part 6 Subnetting Made Easy - Formula My posts on Stack Exchange’s Network Engineering foru...
In my previous post I touched on the four parts (Zones & Zone Members, Class Maps, Policy Maps and Zone Pairs) which make up a ZFW configuration. In this post I will explain the “actions” which are used to tell the router how to handle inbound and outbound traffic flows. Actions Actions are applied to Class Maps which as they’re being nest...
Cisco’s Zone-Based Policy Firewall (ZFW) can be quite confusing when you first start looking in to it, so over the next couple of blog posts I hope to provide readers with some useful information. Having said that, I’ll do my best to avoid reinventing the wheel given that Cisco has already done a great job of documenting ZFW. ZFW Parts ZFW is ...
Note: For the first post in this series, please see the Subnetting Made Easy, Part 1 post. Recently I received an e-mail from a reader who was having trouble with one of their labs. The lab required them to write an ACL which matches only part of a subnet, as opposed to the whole subnet which is what is commonly seen in lab environments. The de...