A Practical Guide to Red Hat® Linux®: Fedora™ Core and Red Hat Enterprise Linux, Third Edition

Appendix C. Security

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IN THIS APPENDIX

Encryption	988
File Security	993
Email Security	993
Network Security	994
Host Security	997
Login Security	998
Remote Access Security	999
Viruses and Worms	1000
Physical Security	1000
Security Resources	1002

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Security is a major part of the foundation of any system that is not totally cut off from other machines and users. Some aspects of security have a place even on isolated machines. Examples of these measures include periodic system backups, BIOS or power-on passwords, and self-locking screensavers.

A system that is connected to the outside world requires other mechanisms to secure it: tools to check files (tripwire), audit tools (tiger/cops), secure access methods (kerberos/ssh), services that monitor logs ...