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    COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD
    44.
    发明公开
    COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD 有权
    通信装置，通信系统和通信方法

    公开(公告)号：EP2690832A4

    公开(公告)日：2014-10-08

    申请号：EP12764188

    申请日：2012-03-23

    Applicant: NEC CORP

    Inventor： KITAMURA HIROSHI

    IPC: H04L12/22 ,  H04L12/66 ,  H04L12/56

    CPC classification number: H04L45/74 ,  H04L12/6418 ,  H04L12/66 ,  H04L61/1511 ,  H04L61/2525 ,  H04L61/2539 ,  H04L63/0407

    Abstract: A communication device having an IP address set therein includes a purpose determining unit that determines a communication purpose of a packet to be transmitted; a source address selection unit that, in the case where the communication purpose determined by the purpose determining unit is a predetermined purpose, selects, as a source address, a formal node identification address provided separately from the set IP address in order to identify the communication device, this formal node identification address having a property such that there exist no communication device that receives, through the formal node identification address, a packet having the formal node identification address set therein as a destination address; and a transmitting unit that transmits a packet having the formal node identification address selected by the source address selection unit set therein as the source address.

    NETWORK GATEWAY APPARATUS
    45.
    发明公开
    NETWORK GATEWAY APPARATUS 审中-公开
    NETZGATEWAY-VORRICHTUNG

    公开(公告)号：EP2744154A1

    公开(公告)日：2014-06-18

    申请号：EP11871375.9

    申请日：2011-11-10

    Applicant: INTO Co. Ltd.

    Inventor： OGAWA Keiko

    IPC: H04L12/46 ,  H04L9/14

    CPC classification number: H04L63/0281 ,  H04L12/4625 ,  H04L12/6418 ,  H04L12/66 ,  H04L45/745 ,  H04L61/2525 ,  H04L61/6022 ,  H04L61/6068 ,  H04L63/0471 ,  H04L69/08 ,  H04L69/162 ,  H04L69/22

    Abstract: A network gateway apparatus is provided, which is able to add an encryption communication function that easily enhances security without forcing setting changes in an existing network environment.
    A process of "deceiving" the TCP/IP protocol stack 205 is performed In order to add a minimum requisite program for implementation of a XPTCP gateway apparatus 101, while utilizing a function of a TCP/IP protocol stack 205 to the utmost. A source MAC address, a source IP address, a source port number, a destination MAC address, a destination IP address and a destination port number are pre-written in a rewriting table in order that the TCP/IP protocol stack 205 is able to process a packet that should be unrelated to an IP address allocated to the XPTCP gateway apparatus 101. Then, a source MAC address and a source IP address written in a received packet are rewritten into a false MAC address and a false IP address, respectively, and a destination MAC address and a destination IP address are rewritten into an IP address and a MAC address allocated to the XPTCP gateway apparatus 101, and then the rewritten addresses are provided to the TCP/IP protocol stack 205.

    Abstract translation: 提供一种网络网关装置，其能够添加能够容易地增强安全性而不强制在现有网络环境中进行设置改变的加密通信功能。 执行“欺骗”TCP / IP协议栈205的过程，以便在最大限度地利用TCP / IP协议栈205的功能的同时添加用于实现XPTCP网关设备101的最小必需程序。 将源MAC地址，源IP地址，源端口号，目的MAC地址，目的地IP地址和目的地端口号预先写入重写表中，以便TCP / IP协议栈205能够 处理与分配给XPTCP网关装置101的IP地址无关的分组。然后，将写入接收到的分组的源MAC地址和源IP地址分别重写为伪MAC地址和伪IP地址， 将目的地MAC地址和目的地IP地址重写为分配给XPTCP网关装置101的IP地址和MAC地址，然后将重写地址提供给TCP / IP协议栈205。

    WIRELESS DATA CARD AND WORKING METHOD THEREOF
    46.
    发明公开
    WIRELESS DATA CARD AND WORKING METHOD THEREOF 有权
    无线数据卡和工作程序THEREFOR

    公开(公告)号：EP2330862A4

    公开(公告)日：2012-11-14

    申请号：EP09817229

    申请日：2009-09-16

    Applicant: HUAWEI DEVICE CO LTD

    Inventor： HE ZHIQIN

    IPC: H04W88/00 ,  G06F13/00 ,  H04W12/06

    CPC classification number: G06F21/85 ,  G06F2213/0038 ,  G06F2221/2117 ,  H04L29/12066 ,  H04L29/12226 ,  H04L29/12396 ,  H04L61/1511 ,  H04L61/2015 ,  H04L61/2525 ,  H04W12/06

    Abstract: A wireless data card includes: a detecting module, adapted to send a notification message to an executing module after detecting a DNS resolution request sent by a computer and detecting that no user account information exists in the wireless data card; and an executing module, adapted to: receive the notification message sent by the detecting module, send prompt information to the computer so as to prompt a user to input the user account information, and write the input user account information into the wireless data card so that the computer can use the user account information to access the Internet through the wireless data card. A working method of the wireless data card is disclosed. The wireless data card and the working method of the wireless data card avoid the inconvenience caused by loss of the driver CD-ROM, work at a low cost, and require no extra memory.

    CLIENT REQUESTED EXTERNAL ADDRESS MAPPING
    50.
    发明公开
    CLIENT REQUESTED EXTERNAL ADDRESS MAPPING 审中-公开
    从客户请求的外部地址图

    公开(公告)号：EP1671469A1

    公开(公告)日：2006-06-21

    申请号：EP04770096.8

    申请日：2004-09-27

    Applicant: Koninklijke Philips Electronics N.V.

    Inventor： EISINK, Jurjen, Henri

    IPC: H04L29/12

    CPC classification number: H04L29/12009 ,  H04L29/12367 ,  H04L29/12396 ,  H04L29/125 ,  H04L29/12556 ,  H04L61/2514 ,  H04L61/2525 ,  H04L61/2564 ,  H04L61/2585 ,  H04L69/16 ,  H04L69/162 ,  H04L69/167 ,  H04L69/22

    Abstract: An access is requested by a local host to a public network. A public address to be used for the access to the public network is determined. A local address, corresponding to the local host, is mapped to the public address. The public address is returned to the local host. A determination is made as to whether an outbound access is to a local network or a public network. When the outbound access is to a public network, then an access is requested to the public network. Public information in response to the request is received. The public information is placed in a payload portion of one or more packets created for the outbound access. The public information generally comprises at least a public port, but may also comprise a public address. The request may supply a local port, so that a public port in the public information will generally conform to the local port.

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