Internet-of-things multi-device intelligent tunnel security penetration interconnection system and method

Abstract

The invention discloses an internet-of-things multi-device intelligent tunnel security penetration interconnection system and an internet-of-things multi-device intelligent tunnel security penetration interconnection method. The system comprises a management end, an equipment end and a cloud end. The management end integrates an intelligent connection management layer, an efficient data plane engine, a unified business operation layer and a dynamic strategy and control center. The intelligent connection management layer dynamically selects an optimal tunnel link through a pluggable protocol framework; the efficient data plane engine intelligently switches multiple modes such as an original socket, libpcap and the like to perform high-performance data capture and filtration according to authority and requirements; the unified service operation layer deeply integrates operation and maintenance tools such as an embedded Web browser and an SSH terminal into a single interface; and the dynamic policy center can issue network rules in real time. According to the method, high-reliability and low-delay tunnel connection in a complex network environment is realized, refined flow control is driven based on service intention, and functions of network penetration, state monitoring, configuration maintenance and the like are seamlessly fused.

Description

Technical Field

[0001] This invention relates to the fields of computer network communication, remote equipment operation and maintenance, and human-computer interaction, specifically to an Internet of Things (IoT) multi-device intelligent tunnel secure penetration and interconnection system and method. Background Technology

[0002] In scenarios such as Industrial IoT and distributed systems that require real-time operation and maintenance of remote devices, existing solutions have significant shortcomings in terms of connection stability, data capture efficiency, and management integration. 1. Rigid connection methods and poor fault tolerance: Most solutions are tied to a single penetration technology (such as traditional VPNs), and cannot automatically adapt or switch when network conditions change (such as strict NAT type or updated firewall policies), resulting in connection interruption or a sharp drop in performance.

[0003] 2. Data capture efficiency bottleneck affects real-time performance: Commonly used network data capture libraries (such as libpcap) may experience high packet loss and increased latency due to overhead such as kernel and user space switching and data copying in high-speed data streams or scenarios requiring extremely low latency, which cannot meet the needs of remote control or data acquisition with high real-time requirements.

[0004] 3. Low functional integration leads to fragmented operation and maintenance processes: Even if a connection is established, operations such as device status monitoring, configuration management, and fault diagnosis still rely on multiple independent software tools, resulting in frequent switching, loss of context, and low operational efficiency.

[0005] 4. Lack of refined and intelligent control over tunnel traffic: Simple full-traffic tunnels or fixed-rule filtering cannot adaptively schedule and optimize traffic based on dynamically changing operation and maintenance tasks (such as emergency command issuance, batch configuration, and real-time monitoring).

[0006] 5. Severe Disconnection Between Network Penetration and Business Operations: In traditional solutions, operations and maintenance personnel first need to establish a network connection using a separate VPN client or dedicated penetration tool. This process is complex and requires specialized knowledge. After the connection is established, an external browser still needs to be manually launched, and the device's IP address needs to be entered to access its web configuration page. If command-line debugging is required, a separate SSH / Telnet terminal software (such as PuTTY or Xshell) needs to be opened again, and authentication information needs to be re-entered. This fragmented toolchain leads to lengthy operation processes, context interruptions, and is prone to operation failures due to incorrect IP input or chaotic session management.

[0007] 6. Fragmented operation and maintenance entry points and fragmented experience: Device discovery, status monitoring, network channel establishment, web configuration, command line maintenance, file transfer and other processes are distributed in multiple independent software, lacking a unified view and working context, resulting in low operation and maintenance efficiency, high learning costs, and difficulty in tracking and auditing the operation process.

[0008] Therefore, there is an urgent need for a solution that can deeply integrate secure and intelligent network penetration capabilities with the core operation and maintenance of devices (Web configuration and command line maintenance) within a single application interface, so as to achieve a one-stop experience of "connect and use, out of the box and maintain". Summary of the Invention

[0009] This invention aims to solve the problems of inflexible connection methods, low data capture efficiency, fragmented operation and maintenance functions, and crude traffic management in existing remote device management solutions. It provides a system and method that supports multi-protocol intelligent tunnels and multi-mode efficient data capture, and can integrate embedded remote access and maintenance to achieve business-driven integrated management.

[0010] To address the aforementioned technical problems, embodiments of the present invention provide the following technical solution: an IoT multi-device intelligent tunnel secure penetration and interconnection system, comprising a management terminal, device terminals, and an optional relay cloud; The management terminal is used to provide users with a unified operating interface and to execute the following functional modules: The intelligent connection management layer is used to dynamically select or aggregate the optimal communication link from multiple pluggable tunneling protocols based on network detection results and preset policies, and to establish and manage one or more tunnel connections with the device. A high-efficiency data plane engine is used locally on the management terminal to dynamically select and enable one or more of a variety of packet capture modes according to the operating system's permissions and performance requirements, in order to capture, filter and forward network packets related to remote device management services. The packet capture modes include at least a high-efficiency kernel bypass capture mode and a standard compatible capture mode. A unified business operation layer is used to integrate and provide embedded remote operation and maintenance tools within the unified operation interface, including at least an embedded web browser and an integrated remote login terminal. The dynamic policy and control center is used to generate network policies based on the user's operational intentions and distribute them to the device end through the established tunnel to achieve dynamic control of the network behavior of the device end. The device is deployed on the remote device or gateway to be managed, and is used to respond to connection requests from the management end and execute the issued network policies.

[0011] Furthermore, the pluggable tunneling protocol integrated in the intelligent connection management layer includes at least: A peer-to-peer direct connection protocol based on UDP hole punching; Cloud relay protocols based on TCP or UDP; Standard VPN tunneling protocol; The system switches between different tunnels or aggregates multiple tunnels into a single logical channel based on real-time link quality assessment results to ensure connection reliability and service quality for critical business traffic.

[0012] Furthermore, the high-efficiency data plane engine supports multi-mode packet capture including: High-efficiency kernel bypass capture mode: When the corresponding system privileges are available, raw sockets or similar mechanisms are used first for packet capture and injection to reduce kernel protocol stack processing and data copying overhead; Standard-compliant capture mode: In scenarios where advanced privileges are not available or complex filtering expressions are required, the capture library is automatically used as a fallback option. Virtual NIC capture mode: In a virtual network environment, capture data packets directly from the specified virtual network interface.

[0013] Furthermore, the high-efficiency data plane engine also includes a programmable filtering and forwarding pipeline, allowing users to define filtering rules based on network 5-tuples, protocol types, or application layer characteristics through a graphical interface or configuration file. The engine will automatically generate and apply corresponding fine-grained filtering rules based on specific operation and maintenance operations initiated by the unified business operation layer, allowing only data packets related to the current operation to pass through the tunnel.

[0014] Furthermore, the operation and maintenance tools provided by the unified business operation layer are deeply integrated into the management software interface, specifically including: The embedded web browser, in response to the user's web configuration operation triggered on the target device, creates a new tab or window in the software interface and automatically navigates to the device's web management address through the established tunnel. The integrated remote login terminal, in response to the user's command-line maintenance operation triggered on the target device, creates a new terminal session within the software interface and automatically initiates an SSH or Telnet connection through the established tunnel.

[0015] Furthermore, the unified business operation layer also integrates an embedded serial port pass-through client for accessing the serial console of remote devices through the tunnel; and a unified device status dashboard for centrally displaying the static information and real-time operating status of all connected remote devices.

[0016] Furthermore, the dynamic strategy and control center can configure the tunnel to operate in at least one of the following modes according to the operation and maintenance scenario: Full-traffic routing mode: Routes all traffic from the network segment specified by the management terminal through a tunnel; Application-level proxy mode: Directs traffic from only the specified application to the tunnel; Advanced sniffing and forwarding mode: Only captures and forwards precise traffic that matches preset filtering rules.

[0017] Furthermore, the dynamic policy and control center supports dynamically issuing network policies to the device acting as a gateway. The policies include at least access control list rules, network address translation rules, and port forwarding rules, enabling the management end to access the innermost network devices connected to the gateway device, thereby achieving multi-layer network penetration.

[0018] The present invention also proposes a remote device management method based on the above-described system, comprising the following steps: Connection establishment steps: Based on the network detection results of the target device, the management end selects and establishes the optimal tunnel connection through the intelligent connection management layer; Business-driven capture steps: Users initiate specific operation and maintenance operations for remote devices through the unified business operation layer; the high-efficiency data plane engine automatically enables the optimal packet capture mode and loads the corresponding fine-grained filtering rules according to the operation type. Data tunnel forwarding steps: Local network data packets that conform to the filtering rules and are captured by the high-efficiency data plane engine are encapsulated and sent to the device through the tunnel; response data packets from the device are returned through the tunnel and decapsulated by the data plane engine before being delivered to the corresponding local application or the embedded operation and maintenance tool. Integrated operation and maintenance steps: Users can directly configure, monitor and maintain remote devices using tools such as embedded web browsers and integrated remote login terminals within a unified operation interface. All network communications are completed transparently through the established tunnel. Strategy dynamic adjustment steps: Based on operation and maintenance needs, network policies are generated through dynamic policies and control centers and distributed to the device end to adjust the tunnel working mode or the network forwarding behavior of the device end in real time.

[0019] Furthermore, in the business-driven capture step, for operations requiring low latency and high real-time performance, the high-efficiency data plane engine prioritizes the high-efficiency kernel bypass capture mode; for operations requiring batch data transmission, the system automatically schedules to a high-bandwidth tunnel link; thereby achieving intelligent traffic scheduling and quality of service assurance based on business type.

[0020] The beneficial effects of the above-described technical solution of the present invention are as follows: 1. Achieving high reliability, high performance, and adaptability in connectivity: Through a pluggable multi-protocol tunneling framework, the system can automatically select or combine optimal connection paths (such as direct connection priority, relay backup), effectively coping with complex network environments. Combined with an efficient data plane engine and employing low-level capture technologies such as raw sockets, it significantly improves the efficiency of packet capture and forwarding, reduces latency and packet loss rate, and provides reliable assurance for remote real-time control and high-frequency data acquisition.

[0021] 2. Provides a deeply integrated and seamless one-stop operation and maintenance experience: Device discovery, status monitoring, and multiple remote access methods (Web, SSH, serial port) are deeply integrated into a single software interface. Users do not need to switch tools, and all operations are completed in a unified context, which greatly improves operation and maintenance efficiency and operational continuity.

[0022] 3. Achieve business-aware, fine-grained traffic control: The system can understand the user's operational intentions and translate them into fine-grained data traffic control strategies. Through dynamic filtering rules and tunnel mode switching, it ensures the priority and stable transmission of critical business data while avoiding unnecessary network exposure, thus improving overall security.

[0023] 4. Flexible architecture with strong scalability: The layered and plug-in design makes it easy to integrate new tunneling protocols, data capture technologies or upper-layer business functions, enabling it to quickly adapt to future technological evolution and diverse customer needs, thus protecting the long-term value of the investment. Attached Figure Description

[0024] Figure 1 This is a simplified diagram of the PC-side software architecture according to an embodiment of the present invention.

[0025] Figure 2 This is a simplified diagram of the platform-side software architecture according to an embodiment of the present invention.

[0026] Figure 3 This is a simplified diagram of the device-side software architecture according to an embodiment of the present invention.

[0027] Figure 4 This is a diagram of the data flow control module according to an embodiment of the present invention.

[0028] Figure 5 This is a diagram of the main interface of the software in an embodiment of the present invention.

[0029] Figure 6 This is a configuration dialog box diagram for network forwarding from the device to the sub-device in an embodiment of the present invention.

[0030] Figure 7 This is a flowchart illustrating the DNAT principle of an embodiment of the present invention. Detailed Implementation

[0031] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0032] This invention provides an innovative intelligent management system for remote devices, whose core technical architecture includes: an intelligent connection management layer, a high-efficiency data plane engine, and a unified business operation layer. Specifically, it includes: 1. Intelligent Connection Management Layer (Multi-Protocol Tunnel Abstraction) This layer is responsible for establishing and optimizing the communication channel between the management end and the device end. Its core lies in abstraction and adaptation. Pluggable tunneling protocol framework: Defines standardized tunneling protocol interfaces, supporting the integration of VPN protocols including but not limited to OpenVPN / WireGuard, P2P direct connection protocols based on UDP hole punching, cloud relay protocols based on TCP / UDP, and custom private high-efficiency protocols. The system can dynamically select or aggregate multiple optimal links based on network probing results (latency, packet loss, NAT type) and policy configuration to achieve high reliability and high bandwidth connections.

[0033] Intelligent session scheduling: Assigns or suggests suitable underlying tunnels for different upper-layer services (such as SSH maintenance, Web configuration, and file transfer), and can switch in real time based on link quality to ensure the smoothness of critical operations.

[0034] 2. High-efficiency data plane engine (multi-mode data capture and processing) This layer is the core of packet capture, filtering, and forwarding, directly determining the tunnel's data throughput efficiency and real-time performance, and is a key innovation of this invention. By employing a multi-mode capture adapter, the system is no longer limited to a single capture method, but integrates multiple packet capture mechanisms, which can be dynamically selected or combined based on operating system permissions, performance requirements, and configuration. (1) High-efficiency kernel bypass capture: In systems with appropriate permissions, raw sockets or similar mechanisms are used first for packet capture. By reducing the number of data processing layers in the protocol stack and the number of kernel-user space copies, CPU usage is significantly reduced, capture efficiency is improved, and packet loss rate is reduced, which is especially suitable for high-speed data flow scenarios.

[0035] (2) Standard compatible capture: In scenarios where advanced privileges are not available or complex filtering expressions are required, the capture library such as libpcap is automatically downgraded to ensure the availability of the function.

[0036] (3) Virtual network card capture: In a VPN or specific virtual network environment, data can be read directly from the virtual network device to achieve the most direct traffic interception.

[0037] Programmable filtering and forwarding pipeline: Captured packets pass through a configurable filtering pipeline. Users can define complex filtering rules based on network address, port, protocol type, and even application layer characteristics through a graphical interface or configuration file. Filtered packets are efficiently encapsulated and sent to the other end through the optimal tunnel established by the intelligent connection management layer.

[0038] This floor provides a centralized view and control interface for the equipment: Device Status Dashboard: Collaborates with the cloud to display a list of all devices under a user's name and their real-time status (online, CPU, memory, temperature).

[0039] Tunnel Session Management: Provides graphical buttons for performing operations such as "Establish Tunnel" and "Disconnect" on selected devices, with real-time visualization of connection status.

[0040] 3. Unified business operation layer (embedded integrated management) This layer provides users with an intuitive and unified management experience, where all operation commands are ultimately transformed into data streams that the data plane engine needs to process.

[0041] Unified Device Dashboard: Aggregates and displays static information and dynamic status (CPU, memory, temperature, network traffic) of all remote devices.

[0042] The embedded operations and maintenance toolset includes: Embedded browser: Used for direct access to the device's web management interface.

[0043] Embedded SSH / Telnet terminal: Used for command-line interaction.

[0044] Embedded serial port pass-through client: used to access serial devices.

[0045] Business policy mapping: Map different user operations (such as "open configuration page" and "start SSH session") to different filtering rules and QoS requirements for the data plane engine, so as to realize business-driven intelligent traffic management.

[0046] 4. Dynamic Strategy and Control Center The system provides centralized policy configuration and management capabilities, including: Tunnel operating mode strategy: Supports multiple modes such as "full traffic routing", "application-level proxy", and "advanced sniffing and forwarding" to adapt to different security and performance requirements.

[0047] Remote device policy distribution: Access control lists (ACLs), network address translation (NAT) or routing rules can be dynamically distributed to remote gateway devices through established tunnels, thereby adjusting their network behavior without directly logging into the devices and enabling access to devices in deeper subnets.

[0048] like Figures 1-3The diagram shown is a simplified representation of the overall software architecture. The software is primarily divided into three ends: the device end, the platform end, and the PC end. Both the PC end and the device end are client software, requiring a connection to the platform end to obtain permissions and establish the association between accounts and devices. Once logged in on the PC, only the user can operate their own devices; devices belonging to other users are invisible to the currently logged-in user. Before remotely operating a device, the PC end must first complete a negotiation process via MQTT or other protocols. Only after the device grants permission will a remote operation channel be established for point-to-point communication. The point-to-point data channel employs an abstract design, supporting various methods such as UDP hole punching, TCP relay, and VPN, and can be expanded at any time to add new communication methods.

[0049] like Figure 4 The diagram shows the data flow control module. The software intercepts necessary data packets by directly reading the network interface card (NIC), and then transmits the intercepted packets via a point-to-point communication method. As shown, the software uses an abstract interface to facilitate expansion with different data interception methods to support different operating systems and hardware. Currently, rawsocket, libpcap, and virtual NIC methods have been implemented to provide more flexible approaches. The intercepted data is packaged and forwarded through an intermediary channel. Upon receipt at the receiving end, the data is parsed and written back to the NIC, completing the data communication process.

[0050] Figure 5 This is the software's main interface. The left side of the interface lists the devices under its name, supporting multi-field matching for quick and easy device location and operation. The middle section displays the device's current operating status and control panel. The status description provides the device's current operating status in text format. The control panel allows control of the device's point-to-point communication switch, or the switching of downstream devices or sensor penetration channels. The right side of the device displays key parameters in a dial-like format, providing a convenient and intuitive way to read the device's operating status.

[0051] Figure 6 This is a configuration dialog box for network forwarding from the device to its sub-devices. The device forwards data packets to sub-network devices via DNAT. Enabling this function treats the device as a single network cable, allowing direct operation of the sub-devices from the PC, which is very convenient in many scenarios. For example, if a PLC is connected to a gateway and remote programming and debugging of the PLC is required, this function can easily achieve the same effect as a direct connection.

[0052] like Figure 7The diagram illustrates the principle of DNAT (Destination Network Address Translation). An external client (203.0.113.100) needs to access an internal server (192.168.1.100), which is not allowed by the IP address design. To solve this problem, DNAT is used to configure a mapping relationship on the NAT gateway, mapping the gateway's IP address to the internal server according to the NAT rule table. Then, the external client can access the internal server by accessing the NAT gateway (198.51.100.10). DNAT is a technology that changes the destination of data packets and is a key mechanism for enabling access to services within a private network from the public network. It is one of the two core functions of NAT technology (the other being SNAT) and is widely used in network devices such as routers, firewalls, and load balancers.

[0053] The following example, a high-requirement scenario of "remote real-time diagnosis and parameter adjustment of an intelligent manufacturing production line," will be used to illustrate the implementation of this invention in detail. This scenario requires millisecond-level response command issuance and real-time data monitoring for PLC controllers in remote factories.

[0054] System environment: (1) Device end: Factory production line gateway, connected to multiple key PLC controllers. The network environment is complex and the firewall policy is strict. (2) Management end: Headquarters expert PC, which needs to access the PLC with low latency and high reliability. (3) Cloud: Protocol discovery and relay server.

[0055] 1. Initialize connection and intelligent routing The experts selected the target factory gateway in the management software. The software then automatically performed network detection in the background.

[0056] The investigation revealed that a direct P2P connection could not be established due to factory firewall restrictions.

[0057] The system automatically selects a UDP-based cloud relay protocol plugin and establishes a relay tunnel with the optimal node in the cloud. This protocol is optimized for low latency control signaling.

[0058] Meanwhile, to prepare for possible large-scale log file transmissions, the system establishes a high-bandwidth TCP relay tunnel as a backup link in parallel.

[0059] 2. Enable efficient data capture and precise filtering Experts need to monitor and write to specific registers of the PLC (IP: 192.168.1.10) in real time.

[0060] Configure the tunnel mode in the software as "Advanced Sniffing Forwarding Mode".

[0061] In the data filter settings, specify the source / destination IP as the PLC address and specify the industrial protocol port number to be forwarded (such as port 502 of Modbus TCP).

[0062] Given the high real-time requirements, the system automatically enables RawSocket mode on the management side to capture data packets sent locally to the PLC protocol port. RawSocket bypasses many processing steps of the standard protocol stack, significantly reducing the time delay and CPU overhead from network card capture to injection tunnel.

[0063] The captured, precisely matched packets are immediately sent to the remote gateway via a low-latency UDP relay tunnel.

[0064] 3. Integrated real-time operation Experts operate within the same software interface: Real-time monitoring: Open the embedded dedicated SCADA monitoring view, which continuously receives real-time data streams from the PLC through a filtered tunnel, resulting in smooth and lag-free visuals.

[0065] Emergency parameter adjustment: Parameter values ​​can be directly modified in the monitoring interface. The network packets generated by the modification command are efficiently captured and quickly sent to the PLC through the same tunnel, achieving a near-on-site response speed.

[0066] Parallel log download: When it is necessary to download the PLC's historical logs, the system automatically schedules the file transfer traffic to a backup high-bandwidth TCP tunnel to avoid affecting the quality of the real-time monitoring channel.

[0067] 4. Dynamic policy-based access penetration The experts also need to temporarily access a debugging server (192.168.1.100) on the same network segment as the gateway.

[0068] Experts can dynamically issue a temporary port forwarding policy to the remote gateway directly through the software interface without logging into the gateway.

[0069] Once distributed, experts can use standard tools (such as browsers or RDP clients) on their local machines to connect to the specific port of the gateway tunnel IP, and traffic will be automatically forwarded to the debugging server via the gateway.

[0070] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An Internet of Things multi-device intelligent tunnel safe penetration interworking system, characterized in that, Includes management terminal, device terminal, and optional relay cloud; The management terminal is used to provide users with a unified operating interface and to execute the following functional modules: The intelligent connection management layer is used to dynamically select or aggregate the optimal communication link from multiple pluggable tunneling protocols based on network detection results and preset policies, and to establish and manage one or more tunnel connections with the device. A high-efficiency data plane engine is used locally on the management terminal to dynamically select and enable one or more of a variety of packet capture modes according to the operating system's permissions and performance requirements, in order to capture, filter and forward network packets related to remote device management services. The packet capture modes include at least a high-efficiency kernel bypass capture mode and a standard compatible capture mode. A unified business operation layer is used to integrate and provide embedded remote operation and maintenance tools within the unified operation interface, including at least an embedded web browser and an integrated remote login terminal. The dynamic policy and control center is used to generate network policies based on the user's operational intentions and distribute them to the device end through the established tunnel to achieve dynamic control of the network behavior of the device end. The device is deployed on the remote device or gateway to be managed, and is used to respond to connection requests from the management end and execute the issued network policies.

2. The system of claim 1, wherein, The pluggable tunneling protocol integrated in the intelligent connectivity management layer includes at least: A peer-to-peer direct connection protocol based on UDP hole punching; Cloud relay protocols based on TCP or UDP; Standard VPN tunneling protocol; The system switches between different tunnels or aggregates multiple tunnels into a single logical channel based on real-time link quality assessment results.

3. The system according to claim 1, characterized in that, The high-efficiency data plane engine supports multi-mode packet capture, including: High-efficiency kernel bypass capture mode: When the corresponding system privileges are available, raw sockets or similar mechanisms are used first for packet capture and injection; Standard-compliant capture mode: In scenarios where advanced privileges are not available or complex filtering expressions are required, the capture library is automatically used as a fallback option. Virtual NIC capture mode: In a virtual network environment, capture data packets directly from the specified virtual network interface.

4. The system according to claim 3, characterized in that, The high-efficiency data plane engine also includes a programmable filtering and forwarding pipeline, allowing users to define filtering rules based on network 5-tuples, protocol types, or application layer characteristics through a graphical interface or configuration file. The engine will automatically generate and apply corresponding filtering rules based on specific operation and maintenance operations initiated by the unified business operation layer, allowing only data packets related to the current operation to pass through the tunnel.

5. The system of claim 1, wherein, The unified business operation layer provides operation and maintenance tools that are deeply integrated into the management software interface, specifically including: The embedded web browser, in response to the user's web configuration operation triggered on the target device, creates a new tab or window in the software interface and automatically navigates to the device's web management address through the established tunnel. The integrated remote login terminal, in response to the user's command-line maintenance operation triggered on the target device, creates a new terminal session within the software interface and automatically initiates an SSH or Telnet connection through the established tunnel.

6. The system of claim 5, wherein, The unified business operation layer also integrates an embedded serial port transparent transmission client for accessing the serial console of remote devices through the tunnel; and a unified device status dashboard for centrally displaying the static information and real-time operating status of all connected remote devices.

7. The system of claim 1, wherein, The dynamic strategy and control center can configure the tunnel to operate in at least one of the following modes according to the operation and maintenance scenario: Full-traffic routing mode: Routes all traffic from the network segment specified by the management terminal through a tunnel; Application-level proxy mode: Directs traffic from only the specified application to the tunnel; Advanced sniffing and forwarding mode: Only captures and forwards traffic that matches preset filtering rules.

8. The system of claim 1 or 7, wherein, The dynamic policy and control hub supports dynamically issuing network policies to the device acting as a gateway. The policies include at least access control list rules, network address translation rules, and port forwarding rules, enabling the management end to access the innermost network devices connected to it through the gateway device.

9. An interconnection method based on the Internet of Things multi-device intelligent tunnel safe penetration interconnection system according to any one of claims 1 to 8, characterized in that, Includes the following steps: In the connection establishment process, the management end selects and establishes the optimal tunnel connection through the intelligent connection management layer based on the network detection results of the target device. Business-driven capture steps: Users initiate specific operation and maintenance operations for remote devices through a unified business operation layer; the high-efficiency data plane engine automatically enables the optimal packet capture mode and loads the corresponding filtering rules based on the operation type. In the data tunnel forwarding step, local network data packets that conform to the filtering rules and are captured by the high-efficiency data plane engine are encapsulated and sent to the device through the tunnel. The response data packet from the device is returned through the tunnel and then decapsulated by the data plane engine before being delivered to the corresponding local application or the embedded operation and maintenance tool. The integrated operation and maintenance process allows users to configure, monitor, and maintain remote devices directly within a unified interface using tools such as embedded web browsers and integrated remote login terminals. All network communications are transparently completed through the established tunnel. The strategy involves dynamic adjustment steps. Based on operational needs, network policies are generated through dynamic policies and control centers and distributed to the device end to adjust the tunnel working mode or the network forwarding behavior of the device end in real time.

10. The method of claim 9, wherein, In the business-driven capture step, for operations requiring low latency and high real-time performance, the high-efficiency data plane engine prioritizes the high-efficiency kernel bypass capture mode; for operations requiring batch data transmission, the system automatically schedules to a high-bandwidth tunnel link.

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