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    • 2. 发明授权
    • Encrypted communication method
    • 加密通信方式
    • US07774592B2
    • 2010-08-10
    • US10585850
    • 2004-12-28
    • Yuichi IshikawaNorihito FujitaAkio IijimaAtsushi Iwata
    • Yuichi IshikawaNorihito FujitaAkio IijimaAtsushi Iwata
    • H04L29/06G06F7/04G06F15/16G06F17/30G06F15/173
    • H04L63/0428
    • A DNS Proxy unit (A12a) holds the domain name of an encrypted communication target node in a CUG setting table (A125a), intercepts a name resolution request for a communication partner node output from an application (A11x) to a DNS server (B1a), determines by looking up the CUG setting table (A125a) whether the communication partner is an encrypted communication target node, and if the communication partner is an encrypted communication target node, registers the IP address of the name-resolved communication partner in an encrypted communication path setting table (A142a). A data packet sent from the application (A11x) to the IP address is intercepted by a data transmission/reception unit (A14a). A data packet to an IP address registered in the encrypted communication path setting table (A142a) is encrypted by a communication encryption unit (A141a) and transmitted to the communication partner. In this way, in executing encrypted communication with a plurality of communication partners by using a communication encryption function provided by an OS, setting of the encrypted communication target node can be done by using a domain name.
    • DNS代理单元(A12a)将加密的通信目标节点的域名保存在CUG设置表(A125a)中,截取从应用(A11x)向DNS服务器(B1a)输出的通信伙伴节点的名称解析请求, 通过查找CUG设置表(A125a)来确定通信伙伴是否是加密的通信目标节点,并且如果通信伙伴是加密的通信目标节点,则将加密通信中的名称解析的通信伙伴的IP地址注册 路径设置表(A142a)。 从应用(A11x)发送到IP地址的数据分组被数据发送/接收单元(A14a)截取。 登记在加密通信路径设定表(A142a)中的IP地址的数据分组由通信加密单元(A141a)进行加密,并发送给通信伙伴。 以这种方式,通过使用由OS提供的通信加密功能来执行与多个通信伙伴的加密通信,可以通过使用域名来设置加密的通信目标节点。
    • 3. 发明申请
    • System and method for external resolution of packet transfer information
    • 用于外部解析分组传输信息的系统和方法
    • US20100054252A1
    • 2010-03-04
    • US12461739
    • 2009-08-21
    • Norihito FujitaAtsushi IwataAkira ArutakiYuichi Ishikawa
    • Norihito FujitaAtsushi IwataAkira ArutakiYuichi Ishikawa
    • H04L12/56H04L12/28
    • H04L29/12066H04L29/06H04L29/12018H04L61/10H04L61/1511H04L69/16H04L69/161
    • When a packet transfer equipment receives a packet, it extracts several types of information contained in the received packet such as the destination IP address and the destination port number and, using the extracted information as the key, inquires of a packet transfer method resolution server about the information related to the packet transfer method. The server keeps the correspondences between several types of information contained in the packet and one or more type of information related to the packet transfer method in the database and, in response to the inquiry from the packet transfer equipment, replies one or more type of information related to the packet transfer method. The packet transfer equipment rewrites several types of information such as the destination IP address and the destination port number according to one or more type of information obtained and transfers the received packet.
    • 当分组传送设备接收到分组时,它提取接收分组中包含的几种类​​型的信息,例如目的地IP地址和目的地端口号,并且使用提取的信息作为密钥,查询分组传送方法分辨率服务器 与数据包传输方式相关的信息。 服务器保持数据包中包含的几种类​​型的信息与数据库中与数据包传送方法有关的一种或多种类型的信息之间的对应关系,并且响应于来自分组传送设备的询问,回复一种或多种类型的信息 与数据包传输方法有关。 分组传送设备根据获得的一种或多种类型的信息重写诸如目的地IP地址和目的地端口号的几种类型的信息,并传送接收到的分组。
    • 4. 发明申请
    • Vpn Getaway Device and Hosting System
    • Vpn Getaway设备和托管系统
    • US20080037557A1
    • 2008-02-14
    • US11577001
    • 2005-10-13
    • Norihito FujitaYuuichi Ishikawa
    • Norihito FujitaYuuichi Ishikawa
    • H04L12/28
    • H04L63/0272H04L12/4633H04L12/4641H04L63/164H04L63/166
    • A VPN gateway (A11) includes a WAN interface (A111) for exchanging packets with client nodes (C1, C2, D1, D2) via IPsec tunnels (B11-B14) set on the WAN side, a LAN interface (A112) for exchanging packets with server nodes (A131-A136) connected to the LAN side, a session relay unit (A114) for temporarily terminating a first communication session to be set for a sever node from a client node, and setting a second communication session that relays the first communication session to the server node, and an SSL processor (A116) for making the second communication session into an SSL. This arrangement makes it possible to dynamically allocate the servers in a data center (A1) to a VPN, permit only an authenticated server to communicate with another node in the VPN, and prevent wiretapping and tampering of communication performed by the server.
    • VPN网关(A11)包括:WAN接口(A 111),用于经由在WAN侧设置的IPsec隧道(B 11〜B 14)与客户机节点(C 1,C 2,D 1,D 2) 用于与连接到LAN侧的服务器节点(A 131 -A 136)交换分组的LAN接口(A 112),用于临时终止要为服务节点设置的第一通信会话的会话中继单元(A 114) 客户端节点,以及设置将第一通信会话中继到服务器节点的第二通信会话;以及用于使第二通信会话进入SSL的SSL处理器(A 116)。 这种安排使得可以将数据中心(A 1)中的服务器动态地分配到VPN,只允许经过身份验证的服务器与VPN中的另一个节点进行通信,并防止对服务器执行的通信进行窃听和篡改。
    • 6. 发明授权
    • QoS-based shortest path routing for hierarchical communication network
    • 基于QoS的分层通信网络的最短路径路由
    • US06944675B2
    • 2005-09-13
    • US09836177
    • 2001-04-18
    • Norihito Fujita
    • Norihito Fujita
    • H04L12/46H04L12/701H04L12/715H04L12/725G06F15/173G06F11/00
    • H04L45/302H04L45/12
    • A router has a network topology table and a number of resource tables corresponding to network areas. In response to a user's request, one of entries of the topology table and one of the resource tables are referenced and a traversable area along the route to the destination and links of the area which satisfy a user-specified QoS value are selected. A calculation is performed on the selected links according to the Dijkstra algorithm to find a shortest path to the destination if the referenced entry indicates that the destination is in the local area of the router. If the entry indicates otherwise, the calculation is continued until a shortest path tree is found for all area border routers of the traversable area or until the calculation terminates if that tree is not found for all such routers, and a route having an optimum QoS value is determined from the shortest path tree.
    • 路由器具有网络拓扑表和与网络区域对应的多个资源表。 根据用户的请求,引用拓扑表和其中一个资源表的条目之一,并且选择沿着到达目的地的路由的可遍及区域,并且选择满足用户指定的QoS值的区域的链路。 根据Dijkstra算法对所选择的链路执行计算,以找到到目的地的最短路径,如果所引用的条目指示目的地在路由器的本地区域中。 如果条目另有说明,则继续计算,直到找到可遍及区域的所有区域边界路由器的最短路径树,或者直到计算终止,如果没有为所有这样的路由器找到该树,并且具有最佳QoS值的路由 从最短路径树确定。
    • 7. 发明授权
    • Communication terminal, channel selection method, and program
    • 通信终端,通道选择方法和程序
    • US09504035B2
    • 2016-11-22
    • US13989968
    • 2011-12-01
    • Hirofumi UedaNorihito Fujita
    • Hirofumi UedaNorihito Fujita
    • H04W72/04H04W72/02H04L12/729H04W40/04H04W88/04
    • H04W72/0453H04L45/125H04W40/04H04W72/02H04W72/0486H04W88/04
    • A communication terminal, comprises: a wireless communication unit to which a plurality of channels are allocated; a channel status calculation unit that calculates, when one of the plurality of channels is set as a forwarding channel, a capacity that can be used in the one channel by the communication terminal and a capacity that can be used in the one channel by another communication terminal; and a channel selection unit that determines, when one of the plurality of channels is set as a forwarding channel, whether a capacity that can be used in the one channel by the communication terminal satisfies a required bandwidth and determines, when another communication terminal has set the one channel as a forwarding channel, whether a capacity that can be used in the one channel by the another communication terminal satisfies the required bandwidth.
    • 一种通信终端,包括:分配有多个信道的无线通信单元; 信道状态计算单元,当所述多个信道中的一个被设置为转发信道时,计算由所述通信终端可以在一个信道中使用的容量以及可以通过另一个通信在一个信道中使用的容量 终奌站; 以及信道选择单元,当所述多个信道中的一个被设置为转发信道时,确定所述通信终端在一个信道中可以使用的容量是否满足所需带宽,并且当另一个通信终端设置 作为转发信道的一个信道,是否能够由另一通信终端在一个信道中使用的容量满足所需的带宽。
    • 8. 发明授权
    • Communication delay time derivation method, communication terminal and communication delay time derivation program
    • 通信延迟时间导出方法,通信终端和通信延迟时间导出程序
    • US09210721B2
    • 2015-12-08
    • US13976316
    • 2012-03-14
    • Hirofumi UedaNorihito Fujita
    • Hirofumi UedaNorihito Fujita
    • H04W4/00H04W74/08H04W56/00H04W40/12H04W84/18H04W40/16
    • H04W74/08H04W40/12H04W40/16H04W56/0055H04W56/0085H04W84/18
    • There is provided a communication delay time derivation method for calculating a communication delay time depending on a combination of channels set between communication terminals on a communication path in the MCH/IF environment. When selecting a channel to be used for communication in each section on the communication path per section between communication terminals on the communication path, a calculation target section specification means 82 detects an inter-terminal selected channel repetitive pattern as a pattern of the selected channels cyclically appearing on the communication path, and defines a section corresponding to the inter-terminal selected channel repetitive pattern as a communication delay time calculation target section. A communication delay time derivation means 83 derives a communication delay time in the calculation target section based on the inter-terminal selected channel repetitive pattern.
    • 提供一种通信延迟时间导出方法,用于根据在MCH / IF环境中的通信路径上的通信终端之间设置的信道的组合来计算通信延迟时间。 当在通信路径上的通信终端之间选择用于通信路径的每个部分中的每个部分中的通信时,计算目标部分指定装置82将周期性地选择的信道的模式的终端间选择的信道重复模式进行检测 出现在通信路径上,并将对应于终端间选择的信道重复模式的部分定义为通信延迟时间计算目标部分。 通信延迟时间导出装置83基于终端间选择的信道重复模式,在计算对象部分中导出通信延迟时间。