Introduction to Computer Networks and Cybersecurity

Chapter 5

Peer-to-Peer (P2P) Networks and Applications

The learning goals for this chapter are as follows:

• Understand the differences between peer-to-peer (P2P) and client/server networks
• Learn the architectures of P2P networks
• Examine the Gnutella, Napster, and BitTorrent protocol architectures for P2P networks
• Examine the details of Skype as a P2P application
• Develop an understanding of the following components that are present in wireless P2P networks: peer-to-peer name resolution (PNRP), Apple’s Bonjour and Wi-Fi Direct devices
• Learn why P2P is an inherent security problem
• Understand the use of Internet Relay Chat (IRC)

5.1 P2P-vs-Client/Server

In a discussion of Peer-to-Peer (P2P) networks and their applications, it is informative to ...