A Home Firewall Solution for Securing Smart Spaces
In Ubiquitous Computing environments, service servers play a central role of actively gathering situation information to detect changes in context to provide appropriate functions for users. However, they also raise concerns related to security and privacy. It is the dynamism and mobility absolutely necessary for smart spaces that can yield extra chances for attackers to exploit vulnerabilities in the system invisibly. From a server-centric viewpoint, researchers must find techniques to reduce the security risks as much as possible from these servers. Firewall technology is a logical approach that can help them accomplish this troublesome task. In this paper, we propose a new concept of context-aware host-based firewall called Home Firewall to protect the central server deploying our current context-aware middleware, namely Context-Aware Middleware for Ubiquitous computing Systems (CAMUS), from suspicious actions. The idea is established on host-based firewalls to filter off malicious context-aware and command packets in/out the service server.