Figure 2-2: Server Password Cracking:. Reusable Passwords A password you use repeatedly to get access to a resource on multiple occasions Bad because attacker will have time to learn it; then can use it Difficulty of Cracking Passwords by Guessing Remotely Usually cut off after a few attempts.
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Home DirectoryFigure 2-5: UNIX/etc/passwd File Entries
Without Shadow Password File
With Shadow Password File
Asterisk instead of x indicates that the password
is stored in a separate shadow password file