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    • 2. 发明申请
    • Firewall with Application Packet Classifier
    • 防火墙与应用程序包分类器
    • US20160149861A1
    • 2016-05-26
    • US14554621
    • 2014-11-26
    • Rockwell Automation Technologies, Inc.
    • Brian A. BatkeSivaram BalasubramanianPetr PtacekTaryl Jasper
    • H04L29/06
    • H04L63/0263H04L63/10H04L63/1408H04L63/168H04L67/12
    • An improved system for establishing rules in a firewall for an industrial network is disclosed. Rules are established at an application level, identifying, for example, actions to occur between two devices. The action may be, for example, read data table or get attribute, and each action may require multiple message packets to be transmitted between the two devices in order to complete. A network device executing the firewall is configured to receive message packets from a sending device and to inspect the message packets to determine which action the sending device is requesting to perform. If the action corresponds to a rule in the database, the network device manages communications between the two devices until all message packets have been transmitted. Thus, a single action, or application, may be defined in the rules database to permit multiple data packets to be communicated between the devices.
    • 公开了一种用于在工业网络的防火墙中建立规则的改进的系统。 在应用程序级别建立规则,识别例如两个设备之间发生的动作。 该动作可以是例如读取数据表或获取属性,并且每个动作可能需要在两个设备之间传送多个消息分组以便完成。 执行防火墙的网络设备被配置为从发送设备接收消息分组,并且检查消息分组以确定发送设备请求执行哪个动作。 如果该动作对应于数据库中的规则,则网络设备管理两个设备之间的通信,直到所有消息分组已被发送。 因此,可以在规则数据库中定义单个动作或应用程序,以允许在设备之间传送多个数据包。