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[Article]-Pick Your Poison - ARP, MAC, WiFi

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don

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Post Sun Feb 11, 2007 1:10 am

[Article]-Pick Your Poison - ARP, MAC, WiFi

Here's the next article revamped by Brian Wilson for his new column on EH-Net. Look for many more contributions from him as 2007 gets into gear.

[Article]-Pick Your Poison - ARP, MAC, WiFi

By Brian Wilson, CCNA, CCSE, CCAI, MCP, Network+, Security+, JNCIA

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In this paper we will cover the basics on Address Resolution Protocol (ARP), Media Access Control (MAC) Addresses, Wireless (WiFi), and layer 2 communications. I hope to explain how a "Man in the Middle Attack" works. The common name for this is ARP poisoning, MAC poisoning, or Spoofing. Before we can get into how the poisoning works, we need to learn about how the OSI Model works and what happens at layer 2 of the OSI Model. To keep this basic we will only scratch the surface on the OSI model to get the idea of how protocols work and communicate with each other.  The OSI (Open Systems Interconnection) Model was developed by the International Standards Organization (ISO) in 1984 in an attempt to provide some standard to the way networking should work. It is a theoretical layered model in which the notion of networking is divided into several layers, each of which defines specific functions and/or features. However this model is only a general guideline for developing usable network interfaces and protocols. Sometimes it may become very difficult to distinguish between each layer as some vendors do not adhere to the model completely. Despite all this the OSI model has earned the honor of being "the model" upon which all good network protocols are based.


Enjoy and be sure to offer feedback,
Don
CISSP, MCSE, CSTA, Security+ SME
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don

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Post Sun Feb 11, 2007 3:42 pm

Re: [Article]-Pick Your Poison - ARP, MAC, WiFi

Submitted to digg. Help get Brian's new column some well deserved notice by voting (digging) this story. Click the link below, and digg it:

http://www.digg.com/security/Pick_Your_ ... P_MAC_WiFi

Thanks,
Don
CISSP, MCSE, CSTA, Security+ SME
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LSOChris

Post Sun Feb 11, 2007 7:35 pm

Re: [Article]-Pick Your Poison - ARP, MAC, WiFi

pretty good article...consider it dugg
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slimjim100

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Post Sun Feb 11, 2007 10:38 pm

Re: [Article]-Pick Your Poison - ARP, MAC, WiFi

Thanks guys/gals I have more coming soon. :)

Thanks,

Brian
CISSP, CCSE, CCNA, CCAI, Network+, Security+, JNCIA, & MCP
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Kev

Post Tue Feb 13, 2007 1:30 am

Re: [Article]-Pick Your Poison - ARP, MAC, WiFi

I always enjoy reading your articles!
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franklinbacs

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Post Tue Feb 13, 2007 2:27 am

Re: [Article]-Pick Your Poison - ARP, MAC, WiFi

good article..  8)
I do believe that ARP protocol is no longer supported in IPv6, it use ND to resolve physical addresses, is there other way to poison (spoof) if it used IPv6?
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slimjim100

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Post Tue Feb 13, 2007 7:39 am

Re: [Article]-Pick Your Poison - ARP, MAC, WiFi

franklinbacs I am not sure I have not played with IPv6 to much yet but if I find anything I will let you know. I am sure there is some way of doing it but I have yet to dig into it.

Brian
CISSP, CCSE, CCNA, CCAI, Network+, Security+, JNCIA, & MCP

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