The interest in policy specification languages is increasing thanks to the proliferation of authorization solutions that need to define their resource access policies by means of them. These solutions define their own policy syntax, usually based on XML, which involves the definition of non-interoperable policies and non-heterogeneous environments. XACML has been defined with that purpose and is getting more and more acceptance for those type of environments as a valid alternative to proprietary policies. In this paper, we present the definition of the whole policies set needed in an authorization scenario, specifically, the NAS-SAML, which defines a network access control service based on SAML and the AAA architecture. We present the XACML documents representing those policies and the entities involved in the their management life cycle.