Inside IP network, the device and the software which do the circuit switching of the IP telephone terminal. It is used with the purpose which actualizes the extension net by the IP telephone in LAN which is while organizing the enterprise and the like. The usual public telephone network (the outside line net) with also relays between the extension nets by the IP telephone IP-PBX. There are 2 types of those which operate as a software with the thing and the general-purpose server circuit switching with the private hardware.

Until recently, the extension net which is while organizing was constructed the private telephone line and the circuit switching device (PLASTIC BONDED EXPLOSIVE) of making use. The extension net can construct the private telephone line without wiring as for the extension net which used IP-PBX vis-a-vis this, IP network of the personal computer (LAN) of making use. By the extension net and the fact that it can integrate computer network, operational cost can be reduced, there is a merit such that method of using which is linked the telephone and the personal computer is possible e.g., the telephone is recorded with the personal computer.

IPR Intellectual property right

Reading: Eye PR
Full spelling: Intellectual Property Right
Alias:
Intellectual property right
Field:
Enterprise information system > IPR
Security > right protection > IPR

In order is produced by the intellectual creation activity of the human, to protect the substance those which such as expression, idea and technology do not have, the right to be given to that device person. Also “intellectual property right” and “intangible property right” are called. In Japan it is protected by law such as the Copyright Act and patent law and intellectual property fundamental law.

When IPR is roughly classified, the copyright which protects those which are produced by art activity, the industrial property right which is the right to relate to industry, it can divide into other rights. There is a literary work contiguity right which protects the person who, gives a public demonstration such as right of the work writer who does to protect the book and performance of music the book in copyright. There is a utility model right, a design right which protects the appearance design of the goods and protects the trade mark in regard to business a right of trade-mark which protect device such as patent right and the idea which protect invention in industrial property right.

Inverse ARP InARP

IPS <Invasion prevention system>

Reading: The eye tweet the s
Full spelling: Intrusion Prevention System
Field:
Security > network > IPS

The tool which obstructs the illegitimate invasion to the server and network. It is offered in the form of the private equipment (appliance) which is installed in boundary and the like of network and the software etc which is introduced into the server.

When IPS of network type expands the function of IDS which inspects invasion and inspects invasion it has the function which does defense such as cutoff of connection in real time. When the connection where worm and the feature pattern which the packet of service denial attack (DoS) and the like has is remembered, corresponds is inspected it cuts off this, notifies to the manager and/or (alert) takes record (log).

It has the function such that IPS of host type is offered in the form of the software which is installed to the server, prevents the illegitimate invasion which utilizes buffer overflow at OS level, tries not to be able to acquire the manager authority by the general user, the alteration of the access log prevents. Rather than OS offering, actualizing the access control at detailed level, separating the server manager and the security manager the case where it was invaded by the fact that it does not exist the manager who had universal authority there is also a product which had the function which holds down the enlargement of damage.

IPsec

Reading: [aipisetsuku]
Full spelling: Security Architecture for Internet Protocol
Field:
Network technology > TCP/IP > IPsec
Security > network > IPsec

IPS system

Reading: The eye tweet s one system
Full spelling: In-Plane-Switching
Field:
Imaging > display > liquid crystal > IPS system

When in one kind of arrangement direction of liquid crystal molecule of liquid crystal panel, the molecule is arranged into the panel surface horizontally, voltage is applied, horizontal way 90 degree the system which turns. When applying voltage, it becomes the liquid crystal panel of the no marry black type which passes through light.

Because change of vertical direction is not accompanied, angle of visibility is wide, there is a feature that color is difficult to change with the angle which is seen. However, answering time is long, as for playback of the animated picture where the movement is extreme besides the fact that we are poor, because light of back light is easy to leak even in a state where light is blocked it is difficult to raise contrast ratio.

IPv4

Reading: The eye tweet the bouillon, the eye tweet buoy four
Full spelling: Internet Protocol Version 4
Field:
Network technology > TCP/IP > IPv4

Internet protocol which is utilized with present Internet (IP). Because the address resource is managed at 32 bits, maximum amount of the computer which can be identified is 4,294,967,296. But, that exhaustion of resources address occurs quickly above expecting with the quick spread of Internet of recent years, fear increased between the authorized personnel, IPv6 which manages address at 128 bits was developed.