In the industrial Internet of Things, it is very important to ensure the security, stability and efficiency of communication between devices.When two 4G LTE routers are located in different physical locations and need to be connected through a virtual private network (VPN),To realize the communication of serial data between them, some configuration is needed.This article will introduce in detail how to configure two 4G LTE routers to realize the communication of serial port data in VPN environment.
Ensure that both 4G LTE routers are successfully connected to the VPN network before serial data communication.This typically involves the following steps:
VPN protocol selection: Select the appropriate VPN protocol, such as PPTP, L2TP or IPSec, according to the network environment and security requirements.
VPN server configuration: Set up a VPN server in a central location and configure the appropriate network address translation (NAT) and security policies.
4G LTE router VPN client configuration: Configure the VPN client on both 4G LTE routers so that it can successfully connect to the VPN server.
Once the VPN environment is set up, the next step is to configure the serial communication of two 4G LTE routers.
Serial port parameter setting: ensure that the serial port parameters (such as baud rate, data bit, stop bit, check bit, etc.) Of the two routers are completely consistent。
Serial port mapping configuration: Configure the corresponding port mapping on the VPN server.Map the serial port data of two 4G LTE routers to a specific port in the VPN network.
Routing rule setting: set the corresponding routing rule on the two 4G LTE routers,Make sure that the serial port data can be transmitted correctly through the VPN network.
In the VPN environment, the security of serial communication must be considered.Therefore, appropriate security policies and firewall rules need to be configured.
Encrypted transmission: Ensure that data is transmitted using an encrypted protocol to prevent data from being stolen or tampered with during transmission.
Access control: set a strict access control policy to allow only specific 4G LTE routers to perform serial data communication.
Firewall rules: Configure firewall rules to prevent unauthorized access and malicious attacks.
After the above configuration is completed, the serial port data communication needs to be tested and verified.Ensure that data is being transmitted correctly between the two 4G LTE routers.
Connectivity test: Use a test tool or command, such as the ping command, to check connectivity between two 4G LTE routers.
Data transmission test: By sending and receiving test data, verify the stability and reliability of serial data communication.
It needs some configuration and debugging to realize the communication of serial port data between two 4G LTE routers in VPN environment.Through the introduction of this article, it is believed that readers will have a deeper understanding of how to configure two 4G LTE routers to realize serial data communication.In practical applications, it also needs to be adjusted and optimized according to the specific network environment and security requirements.
