A Practical Guide to Red Hat Linux: Fedora Core and Red Hat Enterprise Linux, Second Edition

Appendix C. Security

IN THIS APPENDIX
Encryption
File Security
Email Security
Network Security
Host Security
Login Security
Remote Access Security
Viruses and Worms
Physical Security
Security Resources

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 are 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 and machine states (swatch/watcher), packet-filtering and routing ...