Minimum password length

Any password must have at least this many characters.

Require mixed-case passwords

Every password must have at least one lower-case and one upper-case alphabetic character.

Require numeric characters...

Every password must have at least one numeric digit.

Prevent use of dictionary words..

Passwords may not contain any of the words in the current spell check dictionary.

Unless Even with numeric... is checked, numeric prefixes/suffixes on a dictionary word bypass this rule.

Unless Even mixed-case words is checked, mixing the case of the characters in the word bypasses this.

Prevent inclusion of first/last names...

Disallows the user's first and last names from his passwords.