Network-Related Configuration

Table of Contents

13. Network Interfaces

13.1. Network Configuration Files

13.2. Interface Configuration Files

13.2.1. Ethernet Interfaces

13.2.2. IPsec Interfaces

13.2.3. Channel Bonding Interfaces

13.2.4. Alias and Clone Files

13.2.5. Dialup Interfaces

13.2.6. Other Interfaces

13.3. Interface Control Scripts

13.4. Network Function Files

13.5. Additional Resources

13.5.1. Installed Documentation

14. Network Configuration

14.1. Overview

14.2. Establishing an Ethernet Connection

14.3. Establishing an ISDN Connection

14.4. Establishing a Modem Connection

14.5. Establishing an xDSL Connection

14.6. Establishing a Token Ring Connection

14.7. Establishing a Wireless Connection

14.8. Managing DNS Settings

14.9. Managing Hosts

14.10. Working with Profiles

14.11. Device Aliases

14.12. Saving and Restoring the Network Configuration

15. Controlling Access to Services

15.1. Runlevels

15.2. TCP Wrappers

15.2.1. xinetd

15.3. Services Configuration Tool

15.4. ntsysv

15.5. chkconfig

15.6. Additional Resources

15.6.1. Installed Documentation

15.6.2. Useful Websites

16. Berkeley Internet Name Domain (BIND)

16.1. Introduction to DNS

16.1.1. Nameserver Zones

16.1.2. Nameserver Types

16.1.3. BIND as a Nameserver

16.2. /etc/named.conf

16.2.1. Common Statement Types

16.2.2. Other Statement Types

16.2.3. Comment Tags

16.3. Zone Files

16.3.1. Zone File Directives

16.3.2. Zone File Resource Records

16.3.3. Example Zone File

16.3.4. Reverse Name Resolution Zone Files

16.4. Using rndc

16.4.1. Configuring /etc/named.conf

16.4.2. Configuring /etc/rndc.conf

16.4.3. Command Line Options

16.5. Advanced Features of BIND

16.5.1. DNS Protocol Enhancements

16.5.2. Multiple Views

16.5.3. Security

16.5.4. IP version 6

16.6. Common Mistakes to Avoid

16.7. Additional Resources

16.7.1. Installed Documentation

16.7.2. Useful Websites

16.7.3. Related Books

17. OpenSSH

17.1. Features of SSH

17.1.1. Why Use SSH?

17.2. SSH Protocol Versions

17.3. Event Sequence of an SSH Connection

17.3.1. Transport Layer

17.3.2. Authentication

17.3.3. Channels

17.4. Configuring an OpenSSH Server

17.4.1. Requiring SSH for Remote Connections

17.5. OpenSSH Configuration Files

17.6. Configuring an OpenSSH Client

17.6.1. Using the ssh Command

17.6.2. Using the scp Command

17.6.3. Using the sftp Command

17.7. More Than a Secure Shell

17.7.1. X11 Forwarding

17.7.2. Port Forwarding

17.7.3. Generating Key Pairs

17.8. Additional Resources

17.8.1. Installed Documentation

17.8.2. Useful Websites

18. Network File System (NFS)

18.1. How It Works

18.1.1. Required Services

18.2. NFS Client Configuration

18.2.1. Mounting NFS File Systems using /etc/fstab

18.3. autofs

18.3.1. What's new in autofs version 5?

18.3.2. autofs Configuration

18.3.3. autofs Common Tasks

18.4. Common NFS Mount Options

18.5. Starting and Stopping NFS

18.6. NFS Server Configuration

18.6.1. Exporting or Sharing NFS File Systems

18.6.2. Command Line Configuration

18.6.3. Hostname Formats

18.7. The /etc/exports Configuration File

18.7.1. The exportfs Command

18.8. Securing NFS

18.8.1. Host Access

18.8.2. File Permissions

18.9. NFS and portmap

18.9.1. Troubleshooting NFS and portmap

18.10. Using NFS over TCP

18.11. Additional Resources

18.11.1. Installed Documentation

18.11.2. Useful Websites

18.11.3. Related Books

19. Samba

19.1. Introduction to Samba

19.1.1. Samba Features

19.2. Samba Daemons and Related Services

19.2.1. Samba Daemons

19.3. Connecting to a Samba Share

19.3.1. Command Line

19.3.2. Mounting the Share

19.4. Configuring a Samba Server

19.4.1. Graphical Configuration

19.4.2. Command Line Configuration

19.4.3. Encrypted Passwords

19.5. Starting and Stopping Samba

19.6. Samba Server Types and the smb.conf File

19.6.1. Stand-alone Server

19.6.2. Domain Member Server

19.6.3. Domain Controller

19.7. Samba Security Modes

19.7.1. User-Level Security

19.7.2. Share-Level Security

19.8. Samba Account Information Databases

19.9. Samba Network Browsing

19.9.1. Domain Browsing

19.9.2. WINS (Windows Internetworking Name Server)

19.10. Samba with CUPS Printing Support

19.10.1. Simple smb.conf Settings

19.11. Samba Distribution Programs

19.12. Additional Resources

19.12.1. Installed Documentation

19.12.2. Related Books

19.12.3. Useful Websites

20. Dynamic Host Configuration Protocol (DHCP)

20.1. Why Use DHCP?

20.2. Configuring a DHCP Server

20.2.1. Configuration File

20.2.2. Lease Database

20.2.3. Starting and Stopping the Server

20.2.4. DHCP Relay Agent

20.3. Configuring a DHCP Client

20.4. Additional Resources

20.4.1. Installed Documentation

21. Apache HTTP Server

21.1. Apache HTTP Server 2.2

21.1.1. Features of Apache HTTP Server 2.2

21.2. Migrating Apache HTTP Server Configuration Files

21.2.1. Migrating Apache HTTP Server 2.0 Configuration Files

21.2.2. Migrating Apache HTTP Server 1.3 Configuration Files to 2.0

21.3. Starting and Stopping httpd

21.4. Apache HTTP Server Configuration

21.4.1. Basic Settings

21.4.2. Default Settings

21.5. Configuration Directives in httpd.conf

21.5.1. General Configuration Tips

21.5.2. Configuration Directives for SSL

21.5.3. MPM Specific Server-Pool Directives

21.6. Adding Modules

21.7. Virtual Hosts

21.7.1. Setting Up Virtual Hosts

21.8. Apache HTTP Secure Server Configuration

21.8.1. An Overview of Security-Related Packages

21.8.2. An Overview of Certificates and Security

21.8.3. Using Pre-Existing Keys and Certificates

21.8.4. Types of Certificates

21.8.5. Generating a Key

21.8.6. How to configure the server to use the new key

21.9. Additional Resources

21.9.1. Useful Websites

22. FTP

22.1. The File Transport Protocol

22.1.1. Multiple Ports, Multiple Modes

22.2. FTP Servers

22.2.1. vsftpd

22.3. Files Installed with vsftpd

22.4. Starting and Stopping vsftpd

22.4.1. Starting Multiple Copies of vsftpd

22.5. vsftpd Configuration Options

22.5.1. Daemon Options

22.5.2. Log In Options and Access Controls

22.5.3. Anonymous User Options

22.5.4. Local User Options

22.5.5. Directory Options

22.5.6. File Transfer Options

22.5.7. Logging Options

22.5.8. Network Options

22.6. Additional Resources

22.6.1. Installed Documentation

22.6.2. Useful Websites

23. Email

23.1. Email Protocols

23.1.1. Mail Transport Protocols

23.1.2. Mail Access Protocols

23.2. Email Program Classifications

23.2.1. Mail Transport Agent

23.2.2. Mail Delivery Agent

23.2.3. Mail User Agent

23.3. Mail Transport Agents

23.3.1. Sendmail

23.3.2. Postfix

23.3.3. Fetchmail

23.4. Mail Transport Agent (MTA) Configuration

23.5. Mail Delivery Agents

23.5.1. Procmail Configuration

23.5.2. Procmail Recipes

23.6. Mail User Agents

23.6.1. Securing Communication

23.7. Additional Resources

23.7.1. Installed Documentation

23.7.2. Useful Websites

23.7.3. Related Books

24. Lightweight Directory Access Protocol (LDAP)

24.1. Why Use LDAP?

24.1.1. OpenLDAP Features

24.2. LDAP Terminology

24.3. OpenLDAP Daemons and Utilities

24.3.1. NSS, PAM, and LDAP

24.3.2. PHP4, LDAP, and the Apache HTTP Server

24.3.3. LDAP Client Applications

24.4. OpenLDAP Configuration Files

24.5. The /etc/openldap/schema/ Directory

24.6. OpenLDAP Setup Overview

24.6.1. Editing /etc/openldap/slapd.conf

24.7. Configuring a System to Authenticate Using OpenLDAP

24.7.1. PAM and LDAP

24.7.2. Migrating Old Authentication Information to LDAP Format

24.8. Migrating Directories from Earlier Releases

24.9. Additional Resources

24.9.1. Installed Documentation

24.9.2. Useful Websites

24.9.3. Related Books

25. Authentication Configuration

25.1. User Information

25.2. Authentication

25.3. Options

25.4. Command Line Version