Cisco Cisco Email Security Appliance C650 用户指南

Submit and commit your changes.

If you selected List of words to disallow in passwords, create and upload the described text file. 

Password Rules:

List of words to disallow in 
passwords 

You can create a list of words to disallow in passwords. 

Make this file a text file with each forbidden word on a separate line. 
Save the file with the name 

forbidden_password_words.txt

 and use 

SCP or FTP to upload the file to the appliance. 

If this restriction is selected but no word list is uploaded, this 
restriction is ignored. 

Password Strength

You can display a password-strength indicator when an admin or user 
enters a new password. 

This setting does not enforce creation of strong passwords, it merely 
shows how easy it is to guess the entered password. 

Select the roles for which you wish to display the indicator. Then, for 
each selected role, enter a number greater than zero. A larger number 
means that a password that registers as strong is more difficult to 
achieve. This setting has no maximum value. 

Examples:

If you enter 

30

, then an 8 character password with at least one 

upper- and lower-case letter, number, and special character will 
register as a strong password. 

If you enter 

18

, then an 8 character password with all lower case 

letters and no numbers or special characters will register as strong. 

Password strength is measured on a logarithmic scale. Evaluation is 
based on the U.S. National Institute of Standards and Technology rules 
of entropy as defined in NIST SP 800-63, Appendix A. 

Generally, stronger passwords:

Are longer 

Include upper case, lower case, numeric, and special characters

Do not include words in any dictionary in any language. 

To enforce passwords with these characteristics, use the other settings 
on this page.