B.6 Riferimenti sulla Sicurezza

• Cheswick, William R. e Steven M. Bellovin. Firewalls and Internet Security: Repelling the Wily Hacker. Reading, Mass. : Addison-Wesley, 1995. ISBN 0-201-63357-4

• Garfinkel, Simson e Gene Spafford. Practical UNIX & Internet Security. 2a Ed. O'Reilly & Associates, Inc., 1996. ISBN 1-56592-148-8

• Garfinkel, Simson. PGP Pretty Good Privacy O'Reilly & Associates, Inc., 1995. ISBN 1-56592-098-8