In the ever-evolving landscape of industrial internet-of-things (IIoT), the application of 4g Industrial Routers has become increasingly widespread. Among them, Point-to-Point Tunneling Protocol (PPTP) VPN technology, as a commonly used method, has gained significant traction in 4g Industrial Router. However, for engineers and managers in traditional industries, accessing computers under a router with PPTP VPN set up may still be a relatively unfamiliar concept. This article aims to provide a detailed explanation of the process, enabling a better understanding and application of this technology.
PPTP VPN establishes an encrypted tunnel through public networks such as the internet, allowing remote users to securely access internal network resources. To set up PPTP VPN on an 4g Industrial Router, it is crucial to ensure that key information such as the VPN server's IP address, port, username, and password are correctly configured, and that the VPN server is active.
On a remote device, users need to utilize a VPN client software that supports PPTP protocol to establish a VPN connection with the router. This process typically involves entering necessary information such as the VPN server's IP address, port number, username, and password. Once the connection is established, the remote device can securely access the internal network behind the router.
After successfully establishing the VPN connection, users can begin to access computers under the router. There are two common methods:
1. Direct Access: If computers under the router share files, printers, or other resources on the local network, users can directly find and access these computers in the network resource list after connecting to the VPN. This often requires configuring appropriate network sharing and access permissions on the router.
2. Remote Desktop Control: For higher-level access permissions or more complex operations, users can utilize remote desktop control software (such as Windows' built-in Remote Desktop Connection) to access computers under the router. This method requires knowing the target computer's IP address and the user credentials (such as username and password) required for remote desktop connection. Additionally, it is necessary to ensure that the target computer's firewall settings allow access from the VPN connection.
In some cases, users may wish to directly access a specific port (such as the Remote Desktop Protocol's port 3389) on a computer under the router from the external network. This can be achieved through port forwarding. By configuring port forwarding rules on the router, users can map an external network port to a port on the internal network computer, enabling direct access from the external network. This method requires a certain level of network configuration experience, but once configured correctly, it can significantly enhance access convenience and efficiency.
During the process of accessing computers under a router, it is important to consider the following points:
1. Security: Since VPN connections involve the transmission of sensitive information, it is crucial to ensure the security of the VPN connection. It is recommended to use strong passwords, change passwords regularly, and enable encrypted transmission to protect the security of the VPN connection.
2. Access Permissions: Even with a VPN connection established, users still need to have appropriate network access permissions to access computers under the router. This includes ensuring that the target computer's firewall settings allow access from the VPN connection and possessing the necessary user credentials to access the target computer.
3. Network Stability: The stability of the VPN connection is crucial for successful access to computers under the router. Therefore, it is necessary to ensure the stability and reliability of the network connection, avoiding any disconnection or unstable connection issues.
With the correct setup of PPTP VPN and mastery of relevant access techniques and methods, engineers and managers in traditional industries can easily access computers under an 4g Industrial Router. This not only improves work efficiency and convenience but also promotes the in-depth application and development of IIoT technology in traditional industries.
