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Network layer

Show me everything on The OSI Model

- In the Open Systems Interconnection (OSI) communications model, the Network layer knows the address of the neighboring nodes in the network, packages output with the correct network address information, selects routes and Quality of Service, and recognizes and forwards to the Transport layer incoming messages for local host domains. Among existing protocol that generally map to the OSI network layer are the Internet Protocol (IP) part of TCP/IP and NetWare IPX/SPX. Both IP Version 4 and IP Version 6 (IPv6) map to the OSI network layer.

Learn more about The OSI Model

OSI -- Securing the stack: An OSI model security reference with links to tips in "OSI -- securing the stack" series.
Extending OSI to Network Security -- Chapter 1 of 'Hack the Stack': The goal of this chapter is to take the well-known Open Systems Interconnect (OSI) model and use it to present security topics in a new and unique way.
OSI model: Crash Course: The OSI model is the conceptual backbone of most enterprise networks, but do you remember all the details? Read our rundown of the OSI model and what all those layers do.
FastFacts on the OSI model: These resources will help you better understand the OSI model and all those layers in a snap.
The best of 2004: What was on your mind during 2004? We've compiled our most popular content for the year; browse through for a refresher on the technologies you'll need to carry you into 2005.
Understanding Layer 2, 3, and 4 protocols: This chapter excerpt explains the layers of the OSI model, switching, TCP, UDP, and VRRP.

LAST UPDATED:

10 Oct 2006

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-	The Recommendation X.200...Open Systems Interconnection - The basic reference model can be ordered for a small fee from the ITU-S.

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