Patent ID: 7881470
Filing Date: 2011-02-01
Classification: H04L,H04W

Abstract:
1. In a first node, a method comprising: establishing a secure connection via an Internet with a second node that couples to the Internet, the secure connection established with an Internet Protocol Security (IPsec) security association; registering the first node with an authority that couples to the Internet and provides public key infrastructure (PKI) services, wherein the first node obtains both a private key and a public key, wherein the PKI services include: after the secure connection is established, determining that the first node has changed from communicating via a first point of attachment to the Internet to communicating via a second point of attachment to the Internet; in response to the determining that the first node has changed from communicating via the first point of attachment to the Internet to communicating via the second point of attachment to the Internet, sending a request for one of the PKI services from the authority to determine whether the second node is authenticated; where the requested PKI service communicates to the first node that the second node is not authenticated, initiating another IPsec secure connection from the first node to the second node; and where the requested PKI service communicates to the first node that the second node is authenticated: