If you really want to know how to pass you CCNA (Cisco Certified Network Associate) exam then you’ll want to read every word of this article. There are several key areas that you need to master in order for your best chance of success to pass the CCNA test. You will want to get comfortable […]
Best Way to Study for Your CCNA Certification
If you’re wondering what the best way to study for you CCNA certification is, then this article will give you the best possible ways in which to map out the learning materials. In order to give yourself the best chances of successfully passing the CCNA certification program, then setting up a proper study routine is […]
BlackHat 2009 Router Exploitation Presentation
I was reading an interesting presentation the other day, taken from BlackHat USA 2009 Briefings from Felix Lindner, and thought about sharing the main points here. The guy presents a reasonable analysis of the current situation regarding Router security and exploitation. As we all know, routers are exploitable of course, but not as easy as […]
Cisco Unified Communications Manager Express – Deployment and Operational Models
The Cisco CallManager Express is a product under the Unified Communications Products suite of Cisco. In the past it was known as CCME (Cisco Call Manager Express) but now the new name is Cisco Unified Communications Manager Express. This product is an IP Telephony system (IP PBX) for small to medium size businesses of up […]
Policy NAT on Cisco ASA Firewall
As we know, the conventional NAT functionality on Cisco devices (routers, ASA firewalls etc) translates the SOURCE IP address to something else. There is also the so called “Destination based NAT” (or you may see it referred as “Reverse NAT”) which changes the destination IP address. Here we will deal with conventional source based NAT […]
How to Configure DHCP on Cisco 851 or 871 Router
DHCP stands for Dynamic Host Configuration Protocol. Basically it’s a mechanism which assigns IP addresses to computers dynamically. Usually DHCP is a service running on a server machine in the network in order to assign dynamic IP addresses to hosts. All Cisco 800 series models have the ability to work as DHCP servers, thus assigning […]
How To Configure AnyConnect SSL VPN on Cisco ASA 5500
Virtual private networks, and really VPN services of many types, are similar in function but different in setup. At the end of this post I also briefly explain the general functionality of a new remote access vpn technology, the AnyConnect SSL client VPN. The Cisco AnyConnect VPN is supported on the new ASA 8.x software […]
Cisco Online Training
Junior networking engineers often seek to earn a Cisco professional certification (CCNA, CCNP, CCSP etc) in order to prove their knowledge and get a better status in their career. I believe this is a wise move for network professionals since the journey you go through for obtaining your certification will teach you all necessary theory […]
Cisco Router 851 – 871 Interfaces and Basic Configuration Guide Setup
Cisco manufactures routers for all markets, ranging from SOHO up to large service provider models. The Cisco Router 800 series belongs to the lowest SOHO end. The most popular models in the 800 series are the 850 and 870 broadband access models which come with different types of WAN broadband interfaces (the difference between 850 […]
Cisco AnyConnect SSL VPN Client on Cisco ASA 5500
The convenience and advantages of secure VPNs has driven the specific technology to keep evolving continuously. Several years ago we only had the standardized IPSec VPN (which still strongly exists today). IPSec is a pure IP network VPN technology for connecting distant LAN networks over unsecured paths. Also, IPSec is used for client VPNs connecting […]
How to configure Cisco Router with IOS Firewall Functionality – CBAC
For a low budget firewall functionality, a Cisco router with the proper IOS version can work as a network firewall providing stateful protocol inspection using the Context-Based Access Control (CBAC) feature. Many people use normal Access Control Lists on Cisco routers for traffic filtering and protection. However, a normal ACL is just a static packet […]
How to Configure a Cisco ASA 5510 Firewall – Basic Configuration Tutorial
This Cisco ASA Tutorial gets back to the basics regarding Cisco ASA firewalls. I’m offering you here a basic configuration tutorial for the Cisco ASA 5510 security appliance but the configuration applies also to the other ASA models as well (see also this Cisco ASA 5505 Basic Configuration). The 5510 ASA device is the second […]
Cisco ASA 5505 Basic Configuration Tutorial Step by Step
The Cisco ASA 5505 Firewall is the smallest model in the new 5500 Cisco series of hardware appliances. Although this model is suitable for small businesses, branch offices or even home use, its firewall security capabilities are the same as the biggest models (5510, 5520, 5540 etc). The Adaptive Security technology of the ASA firewalls […]