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
Category Archives: Security
How to Configure SSH on Dell Power-Connect
Although not dealing with Cisco directly Dell switches are around in network closets and with my limited experience with them I thought this would be a perfect blog post to show the differences between Dell and Cisco. I like to think of Dell CLI like a dumb downed version of the Cisco CLI so I had some time to play around with a Dell 6248P switch and wanted to figure out how to get SSH working in the thing. Couple searches around the web and some guess and check methods I was able to get SSH working and disable telnet sessions from connecting to the switch. Compared to a Cisco switch dell has few commands when configuring SSH. This switch was configured with an IP address and user name and passwords before I touched it but I don’t think would too hard to figure out. 
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A Safer Web Experience
Some information I was just handed that was published a while ago is that OpenDNS published its 2010 report of web content. So on this friday instead of talking Cisco let’s go back to 2010 and talk about this report, the Filtering and Phishing report. There is some interesting information in this report and for those who don’t know what OpenDNS is currently OpenDNS is the largest global DNS service for consumers, schools, and businesses. OpenDNS can be free DNS service that allows people to control the web content without the need for parental control software. Continue reading
Understanding AAA
The wonderful AAA which in the Cisco world means, Authentication, Authorization, and Accounting but what does that really mean? In today’s post that’s what we are going to be talking about. What is AAA and what are the benefits of using it along with what is it? Continue reading
Common Network Attacks
Network attacks have always been around but they are getting more advanced every day. These attacks are also easy to set up and use. In the past these types of attacks would have to be pulled off by someone who really knew about computers and to know what they are doing. That’s a true hacker, now there are programs that do the same damage and sometimes more with a couple clicks of a mouse, so now anybody can bring down a network. Continue reading
