This lecture provides a review of the higher-level network protocols and a hands-on implementation of a socket connection.

• Networking terms: IP, TCP, Port, and DNS
• How to find your IP address and how to do a DNS lookup
• Building a socket client given the server's IP/Port and the protocol
• Building a socket server given a port and a protocol
• Scalability, Reliability, and Security in servers

• Read sections 1.1 to 1.3 of our textbook (~10 pages).
• Do Lab-1. Use the Discussion Group if you encounter problems. Check also the resources available in the Resource Directory (accessible from the Resources page).
• Read the socket tutorial from Sun. Optional