In recent years, companies and organizations with increasingly distributed IT infrastructures have been consolidating the investment trend toward the cloud computing paradigm, given its many benefits: among them, the ability to develop and deliver applications and services dynamically and flexibly through the use of the container-based approach. Concurrently, such service orchestration systems, foremost among them Kubernetes, are receiving increasing interest to effectively manage these resources in the new container architecture. The value proposition of this thesis is related to the creation of a security function orchestration system in Kubernetes via a software defined approach, employing the Network Service Mesh (NSM) framework and defining a software network based on service chains within extending the Kuberentes network.