Relay server and client terminal

Abstract

A relay server is connected to a LAN and communicable with a relay server of another LAN. The relay server includes a information registering unit 504, a relay group information registering unit 505, a shared resource information registering unit 506, and a relay processing unit of a resource information providing unit, the units of the relay server being arranged to operate as described herein.

Description

technical field [0001] The present invention relates to a relay communication system capable of communicating with other communication devices in a local area network (LAN) across a wide area network (WAN). In particular, it relates to a technique in which a communication device in a certain LAN operates resources held by a communication device in another LAN. [0002] This application claims the priority of Japanese Patent Application No. 2006-341066 filed on December 19, 2006, the entire contents of which are incorporated herein. Background technique [0003] There is a communication technology called VPN (Virtual Private Network). Utilizing this communication technique allows another remote LAN to be used as if it were a directly connected network. For example, it is possible to communicate across the Internet between terminals connected to the LANs of a plurality of branch offices arranged for each region. [0004] However, such a system tends to become a rigid system...

AI Technical Summary

Problems solved by technology

[0004] However, such a system tends to become a rigid system due to the fact that the network is constructed virtually

Therefore, it is not easy to build a system with scalability and flexibility. The systems proposed so far have their own advantages and disadvantages in terms of function and cost.

[0005] For example, if in the same LAN, the same protocol is used to manage resources, the system configuration is not so complicated, so resources can be easily shared among multiple terminals. However, when the communication system spans WAN and involves multiple In the case of LAN, even if you want to share resources such as folders and files among multiple terminals, or you want to delete files held by other terminals from one terminal, it is not easy to deal with it.

It is even more difficult when the protocols used in each LAN are different

[0006] In addition, although the resources held by each terminal are constantly changing due to deletion or movement, it is not easy to dynamically cope with these changes

Also, there is no construct to provide users with this dynamically changing information in a more widely applicable format

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