In this short tutorial let's configure a DHCP server on a Cisco Router. Why would we want to do that? Well configuring a basic DHCP server on a router is a good idea if this is a branch/satellite office or just a small business. There are some pros and cons of configuring DHCP on a Cisco Router so let's briefly discuss them and then start configuring.
Cisco has now introduced another associate level exam, the CCNA Data Center exam. Like the name suggests this exam focuses on the Data Center and if passed you can continue up the stack by also taking the CCNP Data Center exam which was also recently introduced as well. Still want more a little more, if you are up for the challenge you can also tackle the CCIE Data Center which is an exam that was introduced in March of 2012.
I have started looking CCDA information and some of it is interesting, towards the beginning the material started out at design methodologies. It talked about the "forces" of a new network framework and in this post I'll focus on the business forces that make a new framework necessary. I find it interesting when looking at companies because although customer service is important to sustain a company, I also think it will and may already have depend on who embraces the technology wheel, those that do will ultimately win.
When it comes to learning and getting started with Cisco there are some tools that will help out a lot like Packet Tracer, GNS3 and other emulators. These are great tools for that "simulation" of hands on learning, but you can't always stay in that area.
Although this protocol has been around since 1996 it has been anticipated that IPv4 would one day be exhausted. In February 2011 the Internet Assigned Numbers Authority (IANA) assigned the last /8 address blocks to the Regional Internet Registries so time is getting close but you have heard this warning before right? Let's go over IPv6 at least just an overview some the features and changes compared to IPv4 because one day it will happen it's just a matter of when. :) So the first thing to understand about IPv6 is that it's a 128-bit binary value, which is displayed as 32 hexadecimal digits. What does this mean in the size or scope of the addresses?
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!
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! First things first is always backup your configuration before upgrading and I always read the release notes that Cisco provides when I download the IOS image, it's good reading and important because usually new features are introduced and sometime the ASDM can't paraphrase and parse the new configuration which way I usually upgrade the ASDM first.
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!
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) I have compared these two exams side-by-side. If you take look at these two exams, the red on the older exam means it is no longer covered on the (640-554 exam) and the blue on the new exam is new material that is not covered on the (640-553 exam). For the most part Cisco SDM is no longer available instead it is the Cisco Configuration Professional along with that the new exam mentions the Cisco ASA system and walking you into the ASDM along with the different products and services the ASA system offers.
So I just passed my ICND2 exam, I'm now CCNA certified!
This was a long road to travel over a year ago I passed ICND1 which I recived the CCENT certification but with just general life getting in the way I also saw my chance of getting CCNA status stepping further in the distance. If you read how I passed ICND1 will find that the way I studied for this exam was totally different from studying for the ICND1. When I finished the ICND2 exam I saw my score and I was proud that I passed but I knew I could have done better but I don't think I would've. Why?