The cloud technology is spreading like wild fire all over the world. And like everything else in technology, unfortunately security is the last thing that vendors consider while developing technology. The same happened with the cloud. At the beginning, nobody thought about security in the virtual cloud. After several security weaknesses have been identified related […]
Archives for October 2011
VLAN access-map (VACL) Example Configuration on Cisco Switch
In this post I will discuss Vlan access control lists (VACL), also called VLAN access Map or VLAN Map. A VLAN Access-map allows us to filter incoming and outgoing traffic in a switch Vlan. VLAN access-map configuration is very similar to the Route-map configuration. A Vlan access-map is placed on the whole Vlan, which means […]
The Most Important Cisco Certification (Pyramid)
The picture on the left illustrates the Cisco Certification Pyramid. If you are familiar with the pyramids of Egypt, you must know by now that they have stood the test of time, withstanding harsh climate conditions for thousands of years. When we are looking at a pyramid, instinctively we look at the tip first, and […]