Part II. Network-Related Configuration

Table of Contents

4. Network Interfaces

4.1. Network Configuration Files

4.2. Interface Configuration Files

4.2.1. Ethernet Interfaces

4.2.2. Channel Bonding Interfaces

4.2.3. Alias and Clone Files

4.2.4. Dialup Interfaces

4.2.5. Other Interfaces

4.3. Interface Control Scripts

4.4. Configuring Static Routes

4.5. Network Function Files

4.6. Additional Resources

4.6.1. Installed Documentation

5. Network Configuration

5.1. The NetworkManager Daemon

5.2. Interacting with NetworkManager

5.2.1. Connecting to a Network

5.2.2. Configuring New and Editing Existing Connections

5.2.3. Connecting to a Network Automatically

5.2.4. User and System Connections

5.3. Configuring Connection Settings

5.3.1. Configuring IPv4 Settings

6. Dynamic Host Configuration Protocol (DHCP)

6.1. Why Use DHCP?

6.2. Configuring a DHCP Server

6.2.1. Configuration File

6.2.2. Lease Database

6.2.3. Starting and Stopping the Server

6.2.4. DHCP Relay Agent

6.3. Configuring a DHCP Client

6.4. Configuring a Multihomed DHCP Server

6.4.1. Host Configuration

6.5. DHCP for IPv6 (DHCPv6)

6.6. Additional Resources

6.6.1. Installed Documentation

7. Controlling Access to Services

7.1. Configuring the Default Runlevel

7.2. Configuring the Services

7.2.1. Using the Service Configuration Utility

7.2.2. Using the ntsysv Utility

7.2.3. Using the chkconfig Utility

7.3. Running the Services

7.3.1. Using the service Utility

7.4. Additional Resources

7.4.1. Installed Documentation

7.4.2. Related Books

8. Authentication Configuration

8.1. The Authentication Configuration Tool

8.1.1. Identity & Authentication

8.1.2. Advanced Options

8.1.3. Command Line Version

8.2. The System Security Services Daemon (SSSD)

8.2.1. What is SSSD?

8.2.2. SSSD Features

8.2.3. Setting Up SSSD

8.2.4. Configuring Services

8.2.5. Configuring Domains

8.2.6. Setting Up Kerberos Authentication

8.2.7. Troubleshooting

8.2.8. SSSD Configuration File Format

9. OpenSSH

9.1. The SSH Protocol

9.1.1. Why Use SSH?

9.1.2. Main Features

9.1.3. Protocol Versions

9.1.4. Event Sequence of an SSH Connection

9.2. An OpenSSH Configuration

9.2.1. Configuration Files

9.2.2. Starting an OpenSSH Server

9.2.3. Requiring SSH for Remote Connections

9.2.4. Using a Key-Based Authentication

9.3. OpenSSH Clients

9.3.1. Using the ssh Utility

9.3.2. Using the scp Utility

9.3.3. Using the sftp Utility

9.4. More Than a Secure Shell

9.4.1. X11 Forwarding

9.4.2. Port Forwarding

9.5. Additional Resources

9.5.1. Installed Documentation

9.5.2. Useful Websites

10. The BIND DNS Server

10.1. Introduction to DNS

10.1.1. Nameserver Zones

10.1.2. Nameserver Types

10.1.3. BIND as a Nameserver

10.2. Configuring the named Service

10.2.1. Common Statement Types

10.2.2. Other Statement Types

10.2.3. Comment Tags

10.3. Editing Zone Files

10.3.1. Common Directives

10.3.2. Common Resource Records

10.3.3. Comment Tags

10.3.4. Example Usage

10.4. Using the rndc Utility

10.4.1. Configuring the Utility

10.4.2. Checking the Service Status

10.4.3. Reloading the Configuration and Zones

10.4.4. Updating Zone Keys

10.4.5. Enabling the DNSSEC Validation

10.4.6. Enabling the Query Logging

10.5. Using the dig Utility

10.5.1. Looking Up a Nameserver

10.5.2. Looking Up an IP Address

10.5.3. Looking Up a Hostname

10.6. Advanced Features of BIND

10.6.1. Multiple Views

10.6.2. Incremental Zone Transfers (IXFR)

10.6.3. Transaction SIGnatures (TSIG)

10.6.4. DNS Security Extensions (DNSSEC)

10.6.5. Internet Protocol version 6 (IPv6)

10.7. Common Mistakes to Avoid

10.8. Additional Resources

10.8.1. Installed Documentation

10.8.2. Useful Websites

10.8.3. Related Books

11. The Apache HTTP Server

11.1. The Apache HTTP Server 2.2

11.1.1. New Features

11.1.2. Notable Changes

11.1.3. Updating the Configuration

11.2. Running the httpd Service

11.2.1. Starting the Service

11.2.2. Stopping the Service

11.2.3. Restarting the Service

11.2.4. Checking the Service Status

11.3. Editing the Configuration Files

11.3.1. Common httpd.conf Directives

11.3.2. Common ssl.conf Directives

11.3.3. Common Multi-Processing Module Directives

11.4. Working with Modules

11.4.1. Loading a Module

11.4.2. Writing a Module

11.5. Setting Up Virtual Hosts

11.6. Setting Up an SSL Server

11.6.1. An Overview of Certificates and Security

11.6.2. Enabling the mod_ssl Module

11.6.3. Using an Existing Key and Certificate

11.6.4. Generating a New Key and Certificate

11.7. Additional Resources

11.7.1. Installed Documentation

11.7.2. Useful Websites

12. Email

12.1. Email Protocols

12.1.1. Mail Transport Protocols

12.1.2. Mail Access Protocols

12.2. Email Program Classifications

12.2.1. Mail Transport Agent

12.2.2. Mail Delivery Agent

12.2.3. Mail User Agent

12.3. Mail Transport Agents

12.3.1. Postfix

12.3.2. Sendmail

12.3.3. Fetchmail

12.3.4. Mail Transport Agent (MTA) Configuration

12.4. Mail Delivery Agents

12.4.1. Procmail Configuration

12.4.2. Procmail Recipes

12.5. Mail User Agents

12.5.1. Securing Communication

12.6. Additional Resources

12.6.1. Installed Documentation

12.6.2. Useful Websites

12.6.3. Related Books