Introduction to the design, architecture and implementation of client and server programs in the client-server model of computing. Overview of the TCP/IP suite of protocols and some application specific protocols. Sockets programming, client/server, peer-to-peer, Internet addressing, TCP sockets, UDP sockets. Multithreading and exception handling. Interprocess communication and network programming interfaces. Server architectures. Use of scripting languages in providing client-side and server-side processing in web based applications. Security issues.