Table of Contents

Preface 1. Overview of TCP/IP TCP/IP and the Internet A Data Communications Model TCP/IP Protocol Architecture Network Access Layer Internet Layer Transport Layer Application Layer Summary 2. Delivering the Data Addressing, Routing, and Multiplexing The IP Address Internet Routing Architecture The Routing Table Address Resolution Protocols, Ports, and Sockets Summary 3. Network Services Names and Addresses The Host Table DNS Mail Services File and Print Servers Configuration Servers Summary 4. Getting Started Connected and Non-Connected Networks Basic Information Planning Routing Planning Naming Service Other Services Informing the Users Summary 5. Basic Configuration Kernel Configuration Startup Files The Internet Daemon The Extended Internet Daemon Summary 6. Configuring the Interface The ifconfig Command TCP/IP Over a Serial Line Installing PPP Summary 7. Configuring Routing Common Routing Configurations The Minimal Routing Table Building a Static Routing Table Interior Routing Protocols Exterior Routing Protocols Gateway Routing Daemon Configuring gated Summary 8. Configuring DNS BIND: Unix Name Service Configuring the Resolver Configuring named Using nslookup Summary 9. Local Network Services The Network File System Sharing Unix Printers Using Samba to Share Resources with Windows Network Information Service DHCP Managing Distributed Servers Post Office Servers Summary 10. sendmail sendmail's Function Running sendmail as a Daemon sendmail Aliases The sendmail.cf File sendmail.cf Configuration Language Rewriting the Mail Address Modifying a sendmail.cf File Testing sendmail.cf Summary 11. Configuring Apache Installing Apache Software Configuring the Apache Server Understanding an httpd.conf File Web Server Security Managing Your Web Server Summary 12. Network Security Security Planning User Authentication Application Security Security Monitoring Access Control Encryption Firewalls Words to the Wise Summary 13. Troubleshooting TCP/IP Approaching a Problem Diagnostic Tools Testing Basic Connectivity Troubleshooting Network Access Checking Routing Checking Name Service Analyzing Protocol Problems Protocol Case Study Summary A. PPP Tools B. A gated Reference C. A named Reference D. A dhcpd Reference E. A sendmail Reference F. Solaris httpd.conf File G. RFC Excerpts Index

About the Author

Craig Hunt has worked with computer systems for the last twenty years. He spent the first few years after receiving his B.A. from American University running an outdoor camp for inner-city kids, but the call of the computer was stronger than the call of the wild. Craig went to work for the federal government as a programmer and then as a systems programmer. He left the government to work for Honeywell on the WWMCCS network in the days before TCP/IP, back when the network used NCP. After Honeywell, Craig went to work for the National Institute of Standards and Technology. He's still there today and is currently the leader of the Network Engineering Group. Craig lives with his wife and children in Gaithersburg, Maryland. He loves the outdoors, splitting vacation time between the mountains and the sea, and he has a passion for rock and roll music.

Reviews

"A good book to get to grips with TCP/IP, providing good foundations." - Jon Kent, Linux Format, October 2002