Linux TCP/IP Network Administration

SCOTT MANN currently works for SGI, specializing in Linux systems. Previously he was an independent consultant providing network and security administration services including network planning, troubleshooting, performance tuning, and security implementations. Mann has also provided professional education in the UNIX/Linux field. During his 22-plus-year tenure as a UNIX and TCP/IP professional, he has also worked for Sun Microsystems and Digital Equipment Corporation. His previous books include Linux System Security: The Administrator's Guide to Open Source Security Tools (Prentice Hall PTR). MITCHELL KRELL, Ph.D. is a former university professor turned consultant. He currently travels around the country teaching classes and consulting on a variety of topics including Linux, IRIX, system administration, networking, and computer security.

(NOTE: All chapters conclude with Summary and For Further Reading.

Preface.


A Note about Linux Distributions. Linux Documentation. Prerequisites. Typographical Conventions. Errata and Contacts. Acknowledgments.



1. An Introduction to TCP/IP.


Computer Networking. Network Types. Network Models. The Client-Server Model. Request for Comment. Institute of Electrical and Electronics Engineers (EEE). The Internet, TCP/IP, and Other Stacks.



2. Hardware and Network Interface Layers: Network Access.


Hardware Layer. Network Interface Layer. Linux Network Access Implementation.



3. Between the Network Interface and Internet Layers: Address Resolution Protocol.


ARP, RARP, and the TCP/IP Model. The Purpose of ARP. ARP Request/Reply. The ARP Cache. The arpwatch Daemon. A Related Protocol: RARP. Viewing Network Packets.



4. The Internet Layer: IPV4.


The Internet Protocol. IPV4 Addressing. Configuring NICS. Start-up Scripts and NIC Configuration Files. Hostname Resolution.



5. The Internet Layer: IPV6.


IPV6 Datagram. ICMPV6. IGMP and IPV6. IPV6 Addressing. Neighbor Discovery. The Current State of the Linux IPV6 Implementation.



6. The Internet Layer: Routing.


A Simple Routing Example. A Simple Routing Algorithm. The Routing Process. An Intermediate Routing Example. A More Complex Routing Example. Multicast Routing. What about IPV6? Default Free Routers.



7. The Transport Layer.


The Protocols. User Datagram Protocol. Transmission Control Protocol. Use of TCP versus UDP.



8. The Application Layer.


The Client-Server Model. Services and Ports. The /etc/inetd. Conf Configuration Files. TCP_Wrappers. Access Control and the Portmapper. Replacing inetd with xinetd. Which One Should I Use?



9. Troubleshooting and Monitoring.


Troubleshooting Tips. Network Monitoring and Troubleshooting Utilities.



10. Network Applications.


Domain Name Service. Dynamic Host Configuration Protocol. Remote Filesystems. Network Information Service. Lightweight Directory Access Protocol. Electronic Mail. X Window System.



11. Introducing Dynamic Routing Table Management.


Autonomous Systems. Protocol Types. The gated Daemon. RIP. Router Discovery. A Routing Example. Implementing RIP and Router Discovery with gated—An Example. One More Thing…Troubleshooting with gated.



12. OSPF.


OSPF Overview. Implementing OSPF with gated. A Flat OSPF Domain Example. Interlude: Using the ospf_monitor Utility. Examples Using OSPF Areas. RIP or OSPF? GNU Zebra.



13. BGP.


BGP Overview. Implementing BGP with gated.



14. ipchains: Address Translation, IP Accounting, and Firewalls.


What is a Firewall? Packet Filtering. Configuring the Kernel for ipchains. Introduction to Using ipchains. Packet Fragments. IP Masquerading. Adding Custom Chains. Antispoofing Rules. Rule Ordering Is Important! Saving and Restoring Rules. Rule Writing and Logging Tips. Building Your Firewall. ipchains Isn't Just for Firewalls! A Few More Things… Supplementary Utilities. The Next Generation…



15. Netfilter: Address Translation, IP Accounting, and Firewalls.


Netfilter Overview. The iptables Utility. iptables Examples.



16. Iproute2 and Other Routing Topics.


Routing and iproute2. Iproute2 Commands: ip, rtmon, rtacct, and tc. Routing Policies. Tunneling. Traffic Control. The Real Routing Algorithm. Switching. Turning Linux for Routing.



Index.