People interested in Cultural Heritage constitute a community of users characterized by a high degree of mobility. Users visiting cultural sites hosted by local institutions expect to access information pertaining to cultural/artistic heritage from anywhere at anytime, as they can through the desk at their own homes or offices. The Ecumene Web Information System, developed in the groundwork of the Ecumene Project, offers a framework for accessing the artistic and cultural information through a web application. In this paper, we expose the underlying communication network architecture, based on the IPv6 protocol, and investigate the benefits of its adoption, in terms of mobility and security support. Indeed, the need of granting different access rights to different user classes enforces the security requirements of the system. Lastly, the open issues related to the practical integration of an experimental testbed with Mobile IPv6 and IPSec support are detailed, and possible solutions are presented.