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Absolute OpenBSD - UNIX for the Practical Paranoid

Chapter 0: Introduction

What Is BSD?

BSD Goes Public

AT&T UNIX

What Is OpenBSD?

Other BSDs

OpenBSD Users

OpenBSD Developers

OpenBSD''s Strengths

OpenBSD Security

OpenBSD''s Uses

Who Should Read This Book?

Contents Overview

Chapter 1: Additional Help

OpenBSD Community Support

" The Code Is Fine; What''s Wrong with You? "

Man Pages

www.OpenBSD.org

Other Websites

Mailing Lists

Using OpenBSD Problem-Solving Resources

Mailing for Help

Chapter 2: Installation Preparations

OpenBSD Hardware

Getting OpenBSD

The OpenBSD Release

Choosing Your Install Method

Distribution Sets

Partitioning

Standalone OpenBSD Partitioning

Multiple OS Partitioning

Disk Sectors

Decisions Complete!

Chapter 3: Dedicated Installation

Hardware Setup

Making a Boot Floppy

Booting

The Install Program

Disk Setup

Creating OpenBSD Partitions

Subsequent Disks

Other Disklabel Operations

Final Disk Configuration

Network Setup

Root Password

Installation Media

Distribution Sets

Custom Installation Sets and Scripts

Final Installation Steps

Chapter 4: Multiboot Installation

Dual-Boot Install Overview

MBR Partitions

Dual-Boot Installation Restrictions

Hard Disk Geometry

Using fdisk During an Install

Other fdisk Options

Disklabel on Multiboot Systems

Installing from a Foreign File System Partition

Boot Managers

Chapter 5: Post-Install Setup

Basic Configuration

Integrated Program Configuration

Common /etc/rc.conf Assignments

Installing the Source Code

Installing the Ports Collection

Further Setup

Chapter 6: Startup and Booting

Boot Configuration

/etc/boot.conf

Serial Consoles

Multiuser Startup

Editing /etc/rc Scripts

Chapter 7: Managing Users

Single-User Systems

Adding Users

Removing User Accounts

Groups of Users

User Classes

The Root Password

Using Groups to Avoid Using Root

Hiding Root with Sudo

Chapter 8: Networking

Network Layers

The Life and Times of a Network Request

Networking Basics

Basic TCP/IP

Configuring Interfaces

IP Routing

Chapter 9: Internet Connections

Ethernet

Chapter 10: Additional Security Features

Who Is the Enemy?

OpenBSD Security Announcements

Checksums

File Flags

Securelevels

Systrace

Creating Systrace Policies

Real-Time Systrace Monitoring

Software Security Features

Chapter 11: Basic Kernel Configuration

What Is the Kernel?

Startup Messages

Sysctl(8)

Kernel Alteration with config(8)

Boot-Time Kernel Configuration

Chapter 12: Building Custom Kernels

Preparations

Configuration File Format

Configuration Files

Busses and Attachments

Stripping Down the Kernel

config(8)

Building a Kernel

Installing Your Kernel

Chapter 13: Add-On Software

Making Software

The Ports and Packages System

The Ports Tree

Using Packages

Using Ports

Port Flavors

Uninstalling and Reinstalling

Customizing Download Sources

Running Foreign Software

Chapter 14: /ETC

/etc/adduser.conf

/etc/afs/

/etc/amd/

/etc/authpf/

/etc/boot.conf

/etc/bootptab

/etc/ccd.conf

/etc/changelist

/etc/csh.*

/etc/daily

/etc/daily.local

/etc/dhclient.conf

/etc/dhcpd.conf

/etc/disklabels/

/etc/exports

/etc/fstab

/etc/ftpchroot

/etc/ftpusers

/etc/groups

/etc/hostname

/etc/hosts

/etc/hosts.equiv

/etc/inetd.conf

/etc/hosts.lpd

/etc/kerberosIV

/etc/kerberosV

/etc/ksh.kshrc

/etc/localtime

/etc/locate.rc

/etc/login.conf

/etc/lynx.cfg

/etc/magic

/etc/mail/

/etc/mail.rc

/etc/mailer.conf

/etc/man.conf

/etc/master.passwd

/etc/mk.conf

/etc/moduli

/etc/monthly

/etc/monthly.local

/etc/motd

/etc/mtree

/etc/myname

/etc/netstart

/etc/newsyslog.conf

/etc/passwd

/etc/pf.conf

/etc/phones

/etc/portal.conf

/etc/ppp/

/etc/printcap

/etc/protocols

/etc/pwd.db

/etc/rbootd.conf

/etc/rc.*

/etc/remote

/etc/resolv.conf

/etc/rpc

/etc/security

/etc/services

/etc/shells

/etc/skel/

/etc/skeykeys

/etc/sliphome/

/etc/spwd.db

/etc/ssh/

/etc/ssl/

/etc/sudoers

/etc/sysctl.conf

/etc/syslog.conf

/etc/systrace/

/etc/termcap

/etc/ttys

/etc/weekly

/etc/weekly.local

/etc/wsconsctl.conf

Chapter 15: Disk and File System Management

The File System Table: /etc/fstab

The Fast File System

Corrupt FFS Partitions

Mount(8) and FFS

Mounting Foreign File Systems

Removable Media

Adding New Hard Disks

Memory File Systems

Mounting Disk Images

Encrypted Partitions

Chapter 16: Upgrading OpenBSD

Why Upgrade?

Versions of OpenBSD

Errata

Upgrading OpenBSD

Upgrading Base Software

Merging /etc

Updating Ports and Packages

Upgrades from Source

Standard Source Build Process

Chapter 17: Basic Packet Filtering

Firewalls

Enabling PF

What Is Packet Filtering?

Packet Filter Control Program

/etc/pf.conf

Macros

Tables

Options

Packet Normalization

Packet Filtering

Rules, Interfaces, and DHCP

Using Stateful Inspection

Filtering Spoofed Packets

Chapter 18: More Packet Filtering

Network Address Translation

Connection Redirection

FTP and Firewalls

Load Balancing

Bandwidth Management

ALTQ Parent Queue Setup

Defining Priority Queues

Defining Class-Based Queues

Assigning Traffic to Queues

Queuing by Type of Service

Rule Optimization

Chapter 19: Managing PF

Managing Tables

Managing State Tables

Authenticating PF

PF Logging

Appendix A: i386 Kernel Configuration Choices

CPU Configuration

Miscellaneous Options

Common Device Drivers

i386 Kernel Options

Pseudo-Devices

Appendix B: PF Example Configurations

Home Firewall

Small Office Usage

3-Tier Architecture

Afterword

Index

Index_Numbers

Index_A

Index_B

Index_C

Index_D

Index_E

Index_F

Index_G

Index_H

Index_I

Index_K

Index_L

Index_M

Index_N

Index_O

Index_P

Index_Q

Index_R

Index_S

Index_T

Index_U

Index_V

Index_W

Index_X

Index_Y

Index_Z

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