  Management of security policies has become increasingly difficult given the
number of domains to manage, taken into consideration their extent and their
complexity. Security experts has to deal with a variety of frameworks and
specification languages used in different domains that may belong to any Cloud
Computing or Distributed Systems. This wealth of frameworks and languages make
the management task and the interpretation of the security policies so
difficult. Each approach provides its own conflict management method or tool,
the security expert will be forced to manage all these tools, which makes the
field maintenance and time consuming expensive. In order to hide this
complexity and to facilitate some security experts tasks and automate the
others, we propose a security policies aligning based on ontologies process;
this process enables to detect and resolve security policies conflicts and to
support security experts in managing tasks.
