Network and Infrastructure
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Security Implications of the Virtualized Data Center
More than anything, we should be thinking today about where virtualization security will take us tomorrow. We all agree that visualizations is for the better and it's here to stay, but security administrators need to make sure they keep ahead of ...
Persistence of data on storage media
The problem of sensitive data being leaked through the re-use of storage media is by now well-documented. This is unfortunately a reasonably common occurrence, as shown by various stories of sensitive media being lost or sold. However the problem isn...
A Beginner's Guide to the Internet
The Internet has become an integral part of daily life. Unfortunately, while many people have come to rely on it, most have little or no understanding of how the Internet works. This can pose serious problems, particularly as issues around informatio...
A Brief Tour of the Simple Network Management Protocol
SNMP is the most popular protocol used to manage networked devices. It was designed in the late 1980s to facilitate the exchange of management information between networked devices operating at the application layer of the ISO/OSI model.
A Policy to Prevent Outsider Attacks on theLocal Network
We used to be able to say, "If the laptop or computer is not owned by us, then it is not allowed to touch our network." However, over the last few years, business need has exceeded the desire to keep our network "pure" and many non-ag...
An Introduction to Network Access Protection (Part 1)
In this article series, I will introduce you to Network Access Protection and show you how it works.
Applying the OSI Seven Layer Network Model To Information Security
This paper focuses on reviewing a key area of data networking theory - The Open Systems Interconnect (OSI) Seven Layer Network Model. This paper demonstrates the application of the model's concepts into the context of information security. This p...
Basic Journey of a Packet
The purpose of this introductory article is to look at basic look at the journey of a packet across the Internet, from packet creation to switches, routers, NAT, and so on.
Building a secure Internet Data Center Network Infrastructure
The principal goal of this paper is to provide best practice information on designing and implementing secure networks in an Internet Data Center. I will focus on the expected threats and their methods of mitigation, rather than on "Put the firew...
IT Infrastructure Security-Step by Step
While reviewing various papers and books on security, and some security breach incidents, I realized that that there are not many resources available that provide a stepby-step approach for building comprehensive security systems. Most of the existin...
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