With the rapid development of Industrial Internet of Things (IIoT), traditional industries are undergoing unprecedented digital transformation. During this transition, enabling public network access to internal networks and achieving serial port pass-through have become a focus of attention for many enterprises. Industrial routers, as key devices connecting internal networks with the public network, are crucial in terms of functionality and configuration. This article will delve into how industrial router enable public network access to internal networks and elaborate on the implementation principles of serial port pass-through.
Enabling public network access to internal networks essentially involves network penetration technology, aiming to allow public network users to access devices or services located within internal networks. In industrial environments, this typically means allowing remote engineers, technicians, or managers to access control systems, monitoring equipment, or other critical resources within factories.
There are multiple methods to achieve public network access to internal networks, with port forwarding and VPN (Virtual Private Network) technology being the most common. Port forwarding allows routers to redirect traffic from a specific port on the public network to a designated device within the internal network, while VPN establishes encrypted tunnels to enable public network access to internal networks.
For industrial routers, their port forwarding capabilities are often more robust and flexible, supporting multiple protocols and complex network environments. At the same time, industrial routers also possess higher stability and security, meeting the requirements of industrial environments for long-term stable operation and data security.
Serial port pass-through, also known as serial transparent transmission, is a technology that maintains the originality and integrity of data during network communication. In industrial routers, serial port pass-through functionality allows devices to transparently transmit data from one network interface to another without any modification or processing.
The key to achieving serial port pass-through lies in the router's packet forwarding policy. When a router receives a data packet, it determines which interface the packet should be forwarded to based on configured forwarding rules. If serial port pass-through functionality is configured, the router directly forwards the packet from the receiving interface to the specified sending interface without modifying or processing the packet's content.
In industrial environments, serial port pass-through functionality is often used to achieve seamless connection and data exchange between different networks. For example, in an industrial automation system, different controllers, sensors, and actuators may be located in different network segments. By configuring serial port pass-through on industrial routers, these devices can communicate and collaborate with each other, enabling efficient operation of the entire system.
Industrial routers play a crucial role in enabling public network access to internal networks and achieving serial port pass-through. By configuring routers' port forwarding and VPN capabilities, enterprises can achieve public network access and management of internal networks. By configuring routers' serial port pass-through functionality, enterprises can achieve seamless connection and data exchange between different networks.
In practical applications, industrial routers need to consider special factors. For instance, due to the high electromagnetic interference and temperature fluctuations in industrial environments, industrial routers must possess higher stability and reliability. Additionally, as industrial data often requires high levels of security and confidentiality, industrial routers also need to have robust security features and encryption mechanisms to ensure the security of data transmission.
In conclusion, industrial routers, as key devices connecting internal networks with the public network, play a significant role in enabling public network access to internal networks and achieving serial port pass-through. By properly configuring and utilizing industrial routers, enterprises can achieve remote monitoring, data sharing, and collaborative work, thereby improving production efficiency and management levels.
