Abstract:
BBS 구조에서 패킷의 처리 방법이 개시된다. 송신 패킷의 처리 방법은, 네트워크 계층으로부터 패킷을 수신하는 단계, 수신된 패킷이 제1 단편화가 수행된 패킷인 경우, 제1 단편화가 수행된 패킷에 대한 재조립을 수행하는 단계, 재조립된 패킷에 대한 암호화를 수행하는 단계, 암호화된 패킷에 대한 제2 단편화가 필요한 경우, 암호화된 패킷에 대한 제2 단편화를 수행하는 단계, 제2 단편화가 수행된 패킷에 헤더를 추가하는 단계 및 헤더가 추가된 패킷을 물리 계층을 통해 송신하는 단계를 포함한다. 따라서, BBS 구조에서 암호화 기능을 제공할 수 있다.
Abstract:
제1 가상 터널 라우터와 제2 가상 터널 라우터를 포함하는 복수의 가상 터널 라우터가 터널 매핑 제어부와 연동하여 직접 통신이 가능하도록 하기 위하여, 제1 가상 터널 라우터와 제2 가상 터널 라우터가 터널 매핑 제어부로 가상 네트워크 프리픽스 정보를 요청한다. 터널 매핑 제어부가 제1 가상 터널 라우터 및 제2 가상 터널 라우터에 대한 가상 네트워크 프리픽스 정보를 각각 생성하여 인접한 가상 터널 라우터 목록 정보와 함께 전송하면, 제1 가상 터널 라우터와 제2 가상 터널 라우터가 터널을 생성한다. 이렇게 터널이 생성되면, 제1 가상 터널 라우터와 제2 가상 터널 라우터가 각각 수신한 가상 네트워크 프리픽스 정보를 연결하여, 제1 가상 터널 라우터와 제2 가상 터널 라우터간 직접 통신을 수행할 수 있도록 한다.
Abstract:
A home cloud gateway apparatus that is connected to an indoor home network and that provides a service to a client that connects through the network includes an Internet interface unit, a phone exchange unit, a storage unit that stores a virtual computer module, and an authentication processor. The home cloud gateway apparatus provides a virtual computer service by activating the virtualization module that is stored at the storage unit, and provides a phone call through the Internet and a phone call service through the Internet and a phone network using the Internet interface unit and the phone exchange unit. [Reference numerals] (100) Home cloud gateway apparatus; (11) Internet interface unit; (111) Wired internet card; (112) Wireless internet card; (12) Phone exchange unit; (13) Remote control receiver; (14) Graphics processing unit; (15) Broadcast signal receiver; (16) Bluetooth communications unit; (17) Audio input unit; (18) Video input unit; (19) Codec; (20) Authentication processor; (21) Managing unit; (22) Virtualization processing unit; (23) Session processing unit; (24) Storage unit; (25) Control processing unit
Abstract:
PURPOSE: A user-centric virtual network and a method for building thereof are provided to let a tunnel termination and address translation device or a terminal client perform tunneling with a tunnel relay device and connect virtual IP routing information between the devices to a corresponding tunnel. CONSTITUTION: Each of tunnel termination and address translators (420,430) is connected to a private network. A tunnel relay device (410) transmits data through a first tunneling with one of the tunnel termination and address translators. A terminal client (300) transmits data through a second tunneling with the other of the tunnel termination and address translators. A virtual IP is allocated to each of the tunnel termination and address translators, the terminal client, and the tunnel relay device. Each of the first tunneling and the second tunneling connects virtual IP routing information to a corresponding tunnel. [Reference numerals] (100) Private home network; (200) Private office network; (300) Terminal client; (410) Tunnel relay device; (420) Each of tunnel termination and address translators; (430) Each of tunnel termination and address translators
Abstract:
PURPOSE: An apparatus for measuring the experiential quality of an image in a multimedia service and a method thereof are provided to measure the image quality of a multimedia service. CONSTITUTION: A network performance measurement system(101) measures a QoS quality parameter related to network performance. The network performance measurement system calculates a QoS value through the weighted value of the QoS quality parameter. The network performance measurement system calculates the experiential quality of the image when considering an image frame. The network performance measurement system analyzes degradation of the experiential quality of the image.
Abstract:
PURPOSE: A defense method for a DDoS(Distributed Denial of Service) attack is provided to efficiently defend a DDoS attack without changing a network and a protection target system. CONSTITUTION: An attack defense server receives a data packet by network(600). The attack defense server acquires an IP address of a transmitter and time to live based on ID field of the data packet(610). The attack defense server compares a predetermined reference time with the time to live corresponding to the IP address of the transmitter(630). The attack defense server determines aggressiveness of the data packet based on the comparison result(640).