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Linux Network Administrator's Guide, Second Edition
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Linux Network Administrator's Guide, Second Edition
by Terry Dawson
Published by O'Reilly Media, Inc., 2000
Cover
Linux Network Administrator’s Guide, 2nd Edition
Preface
Sources of Information
File System Standards
Standard Linux Base
About This Book
The Official Printed Version
Overview
Conventions Used in This Book
Submitting Changes
Acknowledgments
1. Introduction to Networking
TCP/IP Networks
UUCP Networks
Linux Networking
Maintaining Your System
2. Issues of TCP/IP Networking
IP Addresses
Address Resolution
IP Routing
The Internet Control Message Protocol
Resolving Host Names
3. Configuring the Networking Hardware
A Tour of Linux Network Devices
Ethernet Installation
The PLIP Driver
The PPP and SLIP Drivers
Other Network Types
4. Configuring the Serial Hardware
Introduction to Serial Devices
Accessing Serial Devices
Serial Hardware
Using the Configuration Utilities
Serial Devices and the login: Prompt
5. Configuring TCP/IP Networking
Installing the Binaries
Setting the Hostname
Assigning IP Addresses
Creating Subnets
Writing hosts and networks Files
Interface Configuration for IP
All About ifconfig
The netstat Command
Checking the ARP Tables
6. Name Service and Resolver Configuration
How DNS Works
Running named
7. Serial Line IP
SLIP Operation
Dealing with Private IP Networks
Using dip
Running in Server Mode
8. The Point-to-Point Protocol
Running pppd
Using Options Files
Using chat to Automate Dialing
IP Configuration Options
Link Control Options
General Security Considerations
Authentication with PPP
Debugging Your PPP Setup
More Advanced PPP Configurations
9. TCP/IP Firewall
What Is a Firewall?
What Is IP Filtering?
Setting Up Linux for Firewalling
Three Ways We Can Do Filtering
Original IP Firewall (2.0 Kernels)
IP Firewall Chains (2.2 Kernels)
Netfilter and IP Tables (2.4 Kernels)
TOS Bit Manipulation
Testing a Firewall Configuration
A Sample Firewall Configuration
10. IP Accounting
Configuring IP Accounting
Using IP Accounting Results
Resetting the Counters
Flushing the Ruleset
Passive Collection of Accounting Data
11. IP Masquerade and Network Address Translation
Configuring the Kernel for IP Masquerade
Configuring IP Masquerade
Handling Name Server Lookups
More About Network Address Translation
12. Important Network Features
The tcpd Access Control Facility
The Services and Protocols Files
Remote Procedure Call
Configuring Remote Login and Execution
13. The Network Information System
NIS Versus NIS+
The Client Side of NIS
Running an NIS Server
NIS Server Security
Setting Up an NIS Client with GNU libc
Choosing the Right Maps
Using the passwd and group Maps
Using NIS with Shadow Support
14. The Network File System
Mounting an NFS Volume
The NFS Daemons
The exports File
Kernel-Based NFSv2 Server Support
Kernel-Based NFSv3 Server Support
15. IPX and the NCP Filesystem
IPX and Linux
Configuring the Kernel for IPX and NCPFS
Configuring IPX Interfaces
Configuring an IPX Router
Mounting a Remote NetWare Volume
Exploring Some of the Other IPX Tools
Printing to a NetWare Print Queue
NetWare Server Emulation
16. Managing Taylor UUCP
UUCP Configuration Files
Controlling Access to UUCP Features
Setting Up Your System for Dialing In
UUCP Low-Level Protocols
Troubleshooting
Log Files and Debugging
17. Electronic Mail
How Is Mail Delivered?
Email Addresses
How Does Mail Routing Work?
Configuring elm
18. Sendmail
Installing sendmail
Overview of Configuration Files
The sendmail.cf and sendmail.mc Files
Generating the sendmail.cf File
Interpreting and Writing Rewrite Rules
Configuring sendmail Options
Some Useful sendmail Configurations
Testing Your Configuration
Running sendmail
Tips and Tricks
19. Getting Exim Up and Running
If Your Mail Doesn’t Get Through
Compiling Exim
Mail Delivery Modes
Miscellaneous config Options
Message Routing and Delivery
Protecting Against Mail Spam
UUCP Setup
20. Netnews
What Is Usenet, Anyway?
How Does Usenet Handle News?
21. C News
Installation
The sys File
The active File
Article Batching
Expiring News
Miscellaneous Files
Control Messages
C News in an NFS Environment
Maintenance Tools and Tasks
22. NNTP and the nntpd Daemon
Installing the NNTP Server
Restricting NNTP Access
NNTP Authorization
nntpd Interaction with C News
23. Internet News
Newsreaders and INN
Installing INN
Configuring INN: the Basic Setup
INN Configuration Files
Running INN
Managing INN: The ctlinnd Command
24. Newsreader Configuration
trn Configuration
nn Configuration
A. Example Network: The Virtual Brewery
B. Useful Cable Configurations
A Serial NULL Modem Cable
C. Linux Network Administrator’s Guide, Second Edition Copyright Information
1. Applicability and Definitions
2. Verbatim Copying
3. Copying in Quantity
4. Modifications
5. Combining Documents
6. Collections of Documents
7. Aggregation with Independent Works
8. Translation
9. Termination
10. Future Revisions of this License
D. SAGE: The System Administrators Guild
Index
Colophon
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