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Password Policies
Regardless of the NOS your network
uses, and how many passwords are required to accomplish one’s daily
work goals, almost without question, the battle over password security
is the one area you will face as a ongoing battle. Be too draconian
in your password selection policy by requiring overly complex passwords,
and the users will bypass your efforts by simply writing password
down on a post-it note, which will be placed on the monitor. Be too
lax and you leave the door open for the uninvited. Part
of your job description typically means finding a balance that
the users can live with while offering security. This is usually a very
fine line that calls for ongoing education on your part. While
the amount of security needed will vary, with the data being protected,
the overall environment and how much you like your job. Given that,
here are some guidelines to begin with.
 Strong Passwords
Set a password length of greater than 6 characters.
Do not allow username and password to match.
Set password expiration to expire approximately monthly, and do not allow frequent password reuse.
Make client passwords different from server logons.
Require validation from the server before logon can begin.
Use special characters in passwords such as $%!^.
Do not allow passwords easily found in a dictionary
Protect the data
Networks connected to the Internet need a strong password scheme to offer any degree of protection.
Common point of failure
Sometimes if a user cannot log in, but nothing else seems to be wrong, the user’s password has simply expired.
The NOS will generally warn a user that their password will expire on an upcoming day, but users are infamous for ignoring this warning.
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