Abstract
We present alternatives for the integration of Mobile Internet Protocol (Mobile IP) versions with IP Security (IPSec) to secure IP communications over the wireless link. We focus on network layer security and provisioning of security services while roaming to a foreign network, without having to trust the foreign network. Additionally, such a scheme does not require the correspondent host (CH) to participate in protecting the wireless link. We note, however, that end-to-end security can still be provisioned, should the end user and CH have the capability to do so. Finally, our implementation allows seamless mobility at the network layer, while supporting higher layer services and security features.
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