  Software Defined Networking (SDN) is a widely deployed technology enabling
the agile and flexible management of networks and services. This paradigm
represents an appropriate candidate to address the dynamic and secure
management of large and complex Authentication, Authorization and Accounting
(AAA) infrastructures. In those infrastructures, there are several nodes which
must exchange information securely to interconnect different realms. This
article describes a novel SDN-based framework with a data model-driven approach
following the standard YANG, named SDN-AAA, which can be used to dynamically
manage routing and security configuration in AAA scenarios.
