In a computer telecommunications network, firewalls protect a machine or network from undesired message transmissions. In the case of a firewall employed on a user side of the wireless link, a message rejected by the firewall has already consumed the wireless resources required to transmit. A system...http://www.google.com/patents/US7089586?utm_source=gb-gplus-sharePatent US7089586 - Firewall protection for wireless users
