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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>So what is the best answer, or there are
many? <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> cisspstudy-bounces@cccure.org
[mailto:cisspstudy-bounces@cccure.org] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Clement Dupuis<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, September 07, 2009
3:26 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">The
CISSP Study Mailing list</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Cisspstudy]
Bell-Lapadula?</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>With info this time:<br>
<br>
A system state is defined to be "secure" if the only permitted access
modes of subjects to objects are in accordance with a <a
href="http://en.wikipedia.org/wiki/Security_policy" title="Security policy">security
policy</a>. To determine whether a specific access mode is allowed, the
clearance of a subject is compared to the classification of the object (more
precisely, to the combination of classification and set of compartments, making
up the <i><span style='font-style:italic'>security level</span></i>) to
determine if the subject is authorized for the specific access mode. The
clearance/classification scheme is expressed in terms of a lattice. The model
defines two <a href="http://en.wikipedia.org/wiki/Mandatory_access_control"
title="Mandatory access control">mandatory access control</a> (MAC) rules and
one <a href="http://en.wikipedia.org/wiki/Discretionary_access_control"
title="Discretionary access control">discretionary access control</a> (DAC)
rule with three security properties:<br>
<br>
<br>
Take care<br>
<br>
Clement<br>
<br>
<br clear=all>
<o:p></o:p></span></font></p>
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