Password Recovery – Cisco IOS Routers

 

In this post I want to cover how to recover passwords on a Cisco IOS Router. This is helpful in lab environments as well as production environments. Although this method can be used the correct “legal” way you can also use this method to break into these devices “illegally” if you have physical console access to the device. However to get into it physical power must be turned off first causing a disruption in the environment, let get started! Continue reading “Password Recovery – Cisco IOS Routers”

Upgrade ASA IOS via ASDM

In this short but helpful post, I’ll go through the process of upgrading the ASA IOS via the ASDM. This is a pretty painless method if all goes well the only thing you have to do schedule downtime if this box is in production, and grab the ASA IOS image from Cisco. For this post all have been covered let’s get started! Continue reading “Upgrade ASA IOS via ASDM”

Basic Cisco ASA Overview

The Cisco 5500 Series Adaptive Security Appliances are of course an excellent firewall but the ASA also offers (depending on the model) other security services as well, like IPS systems, VPN, content security, unified communications and remote access. These ASA’s can be used as a standalone appliance’ that can handle the need for branch offices to enterprise data centers. Or they can be included in high-performance blades that work together with the Cisco Catalyst 6500 Series, and recently new they can also run in a virtual instance which provides tenant isolation for public and private clouds! For now let’s focus on the basics of the ASA like the ASDM. Continue reading “Basic Cisco ASA Overview”

CCNA Security – 640-554

Out with the old and in with new Cisco is updating its well-known certification CCNA Security. Candidates that are studying for the older exam (640-553) are suggested to take it on or before September 30th 2012. What has changed in the exam? For the most part Cisco SDM is no longer covered, as it has reached its “End of Life” and in fact Cisco Engineering stopped covering the product from developing and testing on February 26th 2012. You can still renew the product for support (Cisco SmartNet) until March 24th of 2013 and the last date the product will get support will be February 28th of 2014 after that it will become an old friend :). Let’s compare these two CCNA Security Exams and see what has changed, removed and added. (640-553 & 640-554)
Continue reading “CCNA Security – 640-554”

The Three Tiers

Working towards the CCNA Cisco talks about a hierarchical network there are three layers to this design. Access Layer, distribution layer and the core layer. Each of them have their own set of functions and is also considered to be a best practice when the network continues to grow and for redundancy along with just a better way to manage it. Continue reading “The Three Tiers”