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Demand for accessing networks at anytime and from anywhere has been increasing towards the forthcoming ubiquitous society. Users would like to access to their own terminals in homes or companies from the Internet. However, home networks and enterprise networks are usually constructed with private IP addresses, and therefore a NAT necessarily needs to stand on the communication paths. In such an environment,...
Mobile peer-to-peer communication (mobile PPC) is a mobility protocol that enables mobility with only end nodes in an IPv4 network. It is assumed that a mobile node moves between a global network and a private network in the IPv4 network during communication. In the existing mobile PPC, communication cannot be maintained when a mobile node moves if a network address translator (NAT) exists on the...
On the Internet, it is not possible to initiate communication to internal nodes located behind a Network Address Translator (NAT) from external nodes. Therefore, we need to have a NAT traversal technology that can establish a connection between the external and internal nodes. Technologies thus far often depend on specific applications and their usage is rather limited. There are other methods which...
A wireless ad hoc network that has no connection to the Internet can not use a public key infrastructure (PKI). Although an on demand distributed public key management to construct the PKI has been proposed, it cannot work without considering routing tables, since nodes broadcast a packet which contains routing tables. In this paper, we propose an on demand distributed public key management which...
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