Book description
OpenBSD, the elegant, highly secure Unix-like operating system, is widely used as the basis for critical DNS servers, routers, firewalls, and more. This long-awaited second edition of Absolute OpenBSD maintains author Michael Lucas's trademark straightforward and practical approach that readers have enjoyed for years. You'll learn the intricacies of the platform, the technical details behind certain design decisions, and best practices, with bits of humor sprinkled throughout. This edition has been completely updated for OpenBSD 5.3, including new coverage of OpenBSD's boot system, security features like W^X and ProPolice, and advanced networking techniques.
You'll learn how to:
- Manage network traffic with VLANs, trunks, IPv6, and the PF packet filter
- Make software management quick and effective using the ports and packages system
- Give users only the access they need with groups, sudo, and chroots
- Configure OpenBSD's secure implementations of SNMP, DHCP, NTP, hardware sensors, and more
- Customize the installation and upgrade processes for your network and hardware, or build a custom OpenBSD release
Whether you're a new user looking for a complete introduction to OpenBSD or an experienced sysadmin looking for a refresher, Absolute OpenBSD, 2nd Edition will give you everything you need to master the intricacies of the world's most secure operating system.
"The definitive book on OpenBSD gets a long-overdue refresh." -Theo de Raadt, OpenBSD Founder
Publisher resources
Table of contents
- Advance Praise for Absolute OpenBSD, 2nd Edition
- Dedication
- About the Author
- About the Technical Reviewer
- Foreword
- Acknowledgments
- Introduction
- 1. Getting Additional Help
- 2. Installation Preparations
- 3. Installation Walk-Through
- 4. Post-Install Setup
- 5. The Boot Process
- 6. User Management
-
7. Root, and How to Avoid It
- The Root Password
- Using Groups
- Hiding Root with sudo
- Using sudo
- sudoedit
- The Biggest sudo Mistake: Exclusions
- sudo Logs
-
8. Disks and Filesystems
- Device Nodes
- DUIDs and /etc/fstab
- MBR Partitions and fdisk(8)
- Labeling Disks
- The Fast File System
- What’s Currently Mounted?
- Mounting and Unmounting Partitions
- How Full Is That Partition?
- Adding New Hard Disks
- 9. More Filesystems
- 10. Securing Your System
- 11. Overview of TCP/IP
- 12. Connecting to the Network
- 13. Software Management
-
14. Everything /etc
- /etc Across Unix Variants
-
The /etc Files
- /etc/adduser.conf
- /etc/amd
- /etc/authpf
- /etc/bgpd.conf
- /etc/boot.conf
- /etc/changelist
- /etc/chio.conf
- /etc/csh.*
- /etc/daily and /etc/daily.local
- /etc/dhclient.conf
- /etc/dhcpd.conf
- /etc/disklabels/
- /etc/disktab
- /etc/dumpdates
- /etc/dvmrpd.conf
- /etc/exports
- /etc/fbtab
- /etc/firmware
- /etc/fonts/
- /etc/fstab
- /etc/ftpchroot
- /etc/ftpusers
- /etc/gettytab
- /etc/group
- /etc/hostapd.conf
- /etc/hostname.*
- /etc/hosts
- /etc/hosts.equiv
- /etc/hosts.lpd
- /etc/hotplug/
- /etc/ifstated.conf
- /etc/iked/, /etc/iked.conf, /etc/ipsec.conf, and /etc/isakmpd
- /etc/inetd.conf
- /etc/kbdtype
- /etc/kerberosV/
- /etc/ksh.kshrc
- /etc/ldap/ and /etc/ldapd.conf
- /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/passwd, /etc/spwd.db, and /etc/pwd.db
- /etc/mixerctl.conf
- /etc/mk.conf
- /etc/moduli
- /etc/monthly and /etc/monthly.local
- /etc/motd
- /etc/mrouted.conf
- /etc/mtree/
- /etc/mygate
- /etc/myname
- /etc/netstart
- /etc/networks
- /etc/newsyslog.conf
- /etc/nginx/
- /etc/nsd.conf
- /etc/ntpd.conf
- /etc/ospf6d.conf and /etc/ospfd.conf
- /etc/pf.conf and /etc/pf.os
- /etc/ppp/
- /etc/printcap
- /etc/protocols
- /etc/rbootd.conf
- /etc/rc.*
- /etc/relayd.conf
- /etc/remote
- /etc/resolv.conf and /etc/resolv.conf.tail
- /etc/ripd.conf
- /etc/rmt
- /etc/rpc
- /etc/sasyncd.conf
- /etc/sensorsd.conf
- /etc/services
- /etc/shells
- /etc/skel/
- /etc/sliphome/
- /etc/snmpd.conf
- /etc/ssh/
- /etc/ssl/
- /etc/sudoers
- /etc/sysctl.conf
- /etc/syslog.conf
- /etc/systrace/
- /etc/termcap
- /etc/ttys
- /etc/weekly and /etc/weekly.local
- /etc/wsconsctl.conf
- /etc/X11
- /etc/ypldap.conf
- 15. System Maintenance
- 16. Network Servers
- 17. Desktop OpenBSD
- 18. Kernel Configuration
- 19. Building Custom Kernels
- 20. Upgrading
- 21. Packet Filtering
- 22. Advanced PF
- 23. Customizing OpenBSD
- A. Afterword
- Index
- About the Author
- Copyright
Product information
- Title: Absolute OpenBSD
- Author(s):
- Release date: April 2013
- Publisher(s): No Starch Press
- ISBN: 9781593274764
You might also like
book
Absolute FreeBSD, 3rd Edition
FreeBSD is the muscle behind companies like Netflix and EMC. Any place where someone does heavy …
book
Mastering FreeBSD and OpenBSD Security
FreeBSD and OpenBSD are increasingly gaining traction in educational institutions, non-profits, and corporations worldwide because they …
book
Introducing Linux Distros
Learn the pros and the cons of the most frequently used distros in order to find …
video
Introduction to the FreeBSD Open-Source Operating System
This ten-hour video starts with an introduction to the FreeBSD community and explains how it differs …