Secure wireless mobile communications

摘要

Secure wireless communications for a mobile host over any wireless interface within a wireless network is provided by a security gateway. The security gateway is situated and configured within the mobile host's home network of the wireless network such that it provides the only point of access between the wireless network and the home network. Additionally, the security gateway is separate and distinct from the mobile host's home agent within the home network. A single tunnel mode security association is established between the mobile host's wireless interface and the security gateway's network interface on the home network. This single tunnel mode security association remains established as the mobile host moves between foreign networks and provides secure wireless communications to the mobile host whether the mobile host is in the home network or the foreign networks.