I had some requests to provide my take on the OSI model separately from the presentation I made at PwnSchool, so here you go… the most comprehensive, authoritative version of the OSI model ever presented.
The OSI Model – Pro Edition
Protocol Deep Dive: ARP
Overview
The Address Resolution Protocol (ARP) allows for conversion from a network layer address to a hardware layer address (e.g. from the IP address to the MAC address). It is defined by RFC 826, and is a layer 2 protocol in the OSI model. For simplicity, this article will refer to IP address resolutions in examples.
Prerequisites
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- Two systems that each know their own IP address and MAC address
- A usable network layer path between the two systems
- The sending system must know the IP address of the destination system
Hermit's Cave 