Absolute Openbsd Unix For The Practical Paranoid [Electronic resources] نسخه متنی

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Absolute Openbsd Unix For The Practical Paranoid [Electronic resources] - نسخه متنی

Michael W. Lucas

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    Table of Contents

    BackCover

    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

    List of Tables

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    /etc/magic

    Many files include a "magic number" that identifies what sort of file they are. The file(1) program uses these magic numbers to identify the file type, using /etc/magic as an index of magic numbers. Do not manually edit /etc/magic, as it is automatically generated by compiling file(1).

    / 298