Understanding the Internet and network programming -- I/O in the .NET framework -- Working with sockets -- HTTP : communicating with Web servers -- SMTP and POP3 : communicating with email servers -- FTP : communicating with file servers -- Securing a network : firewalls, proxy servers, and routers -- Protecting data : encryption -- Controlling user access : authentication and authorization -- Programming for scalability -- Optimizing bandwidth utilization -- Ping, DNS, and WHOIS : monitoring your network -- Analyzing network packets -- Adding digital telephony -- Message queues --IPv6 : programming for the next-generation Internet -- Web services and remoting