User-Specific Network Service Functions in an SDN-enabled Network Node

Network Functions Virtualization can enable each user (tenant) to define his desired set of network services, called (network) service graph. For instance, a User1may want his traffic to traverse a firewall before reaching his terminal, while a User2 may be interested in a different type of firewall and in a network monitor as well. This paper presents a prototype of an SDN-enabled node that, given anew user connected to one of its physical ports, it is able to dynamically instantiate the user´s network service graph and force all his traffic to traverse the proper set of network functions.