I think you are arguing two different points here.
One is the number of possible passwords and the other is
negative impacts on security.
He is correct when he says it reduces the number of
passwords, but incorrect when he says it diminishes
security.
In the example you give below, if all four aspects are
enforced, then the second password could not be used. This
does in fact "reduce the number of possible passwords".
Another example would be the difference between requiring
that a password be exactly 8 characters in length, and
allowing a password to be any length up to 8 characters.
The latter would allow for a lot more possible combinations,
but does not remove the fact that a 1 character password is
not nearly as secure.
Just my 2 cents.
John Wienand
Network Services Manager
BNA Software
O: 202-496-6001 C: 202 329-1095
"Jackson,
Eric R IT3
(CVN75 To
CS-3)" "Ansgar -59cobalt-
<[EMAIL PROTECTED] Wiechers"
n75.navy.mi <[EMAIL PROTECTED]>
l> cc
Sent by: <[EMAIL PROTECTED]
listbounce@ m>
securityfoc Subject
us.com RE: Password complexity -
improvement
08/15/2007
06:46 PM
Ansgar,
You're absolutely wrong in your statement here. Enforcing
passwords
that MUST consist of uppercase letters, lowercase letter,
numbers AND
special characters INCREASES the total number of possible
passwords;
which in turn has a positive impact on your security.
It is much harder to break a password of AaBb1! than aabb1!
The more
options there are that are enforced, the more complex the
passwords.
The determining factor in this case would be how long or
short the
password lengths are.
R/
Jackson
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
On Behalf Of Ansgar -59cobalt- Wiechers
Sent: Wednesday, August 15, 2007 2:39 PM
To: [email protected]
Subject: Re: Password complexity - improvement
On 2007-08-15 dubaisans dubai wrote:
> Is there a way to improve the password complexity
requirements in
> Windows 2000/2003 servers
>
> The default will enforce 3 of the following 4 properties -
Uppercase,
> smallercase, numbers, special-characters.
>
> Is there a way to enforce all 4 properties.
Enforcing passwords that MUST consist of uppercase letters,
lowercase
letters, numbers AND special characters reduces the total
number of
possible passwords, which in consequence has a negative
impact on your
security.
Regards
Ansgar Wiechers
--
"All vulnerabilities deserve a public fear period prior to
patches
becoming available."
--Jason Coombs on Bugtraq
