Access remote Serial over IP

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Serial over IP technology


  1. What is Serial over IP technology
  2. FlexiHub: software for sharing RS232 over IP
  3. An alternative method to share serial devices over IP network
  4. Hardware solutions for share Serial port over IP.

What is Serial over IP technology?

You may be curious as to how data is transmitted from RS232 devices over a network. It’s done with Serial over IP (SOI) technology. Using SOI functionality, data packets can be sent from real or virtual serial ports over a TCP/IP network. This provides a method to configure, monitor, and manage COM interfaces remotely. The ability to establish serial port over IP connectivity enables users to program and interact with network-attached serial devices located anywhere in the world. RS232 over IP lets you monitor lab equipment or keep tabs on industrial automation systems that communicate through serial interfaces.

This article will discuss some different ways you can implement serial over TCP/IP capabilities. We will look at the advantages and disadvantages of hardware solutions as well as serial over IP software to help you decide which one works best for your situation.

FlexiHub: software for sharing
RS232 over IP

Working with FlexiHub is really easy, no advanced setup or lengthy configuration process is required. You need to choose how many connections will fit your requirements. It is also required to register to start using the app.


Windows, macOS, Linux, Android
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The program works over Ethernet, any local network, WiFi and the Internet. As a result, the user can connect a serial device over IP from a remote location and doesn’t really have to worry about where the device is located physically.

The physical distance between a computer that needs access to a serial device and a computer to which the device is actually attached does not matter at all. If you have FlexiHub installed on both machines and network connection – you can work with remote RS232 via Ethernet as if the device were connected directly to your local computer.

Since FlexiHub goes beyond what other serial to IP apps are able to offer, especially with regard to the speed of connections and security of data transfer, the software seems to be the most efficient way to share serial devices over Ethernet.

How to share serial port devices over IP:

  1. Register to create a FlexiHub account and pick the plan with the required amount of connections.
  2. Install the application on all network computers that need remote access to an RS232 port.
  3. Launch the application on a computer that has the RS232 device attached to it, log into your account.
  4. Open the application on a computer that needs to access the device and log into the same account. In the list of available devices locate the required device and click ‘Connect’.

That’s it - now you can work with the device, its contents, and functionality as if it were attached to the local RS232 port.

An alternative method to share serial devices over IP network

Another great software solution for sharing RS232 devices over IP network is Serial to Ethernet Connector. It allows tuning every connection setting before sharing a device, making the software more appealing to a more tech-savvy audience in comparison with FlexiHub. What is more, Serial to Ethernet Connector is capable of running on Windows and Linux operating systems, and it can share as many serial devices at a time as required for the implementation of the project.

Sec logo

Serial to Ethernet Connector

Connect serial ports over Ethernet
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Serial to Ethernet Connector

The operation of Serial to Ethernet Connector (SEC) is very straightforward. Install the software on the local machine which will share RS232 traffic over the network (server) as well as the remote machines that will access the shared device (clients). The software then established a virtual bridge over which communication is conducted. A client connected to the remote device gains all the functionality of a direct physical connection to the peripheral equipment.

Here are the simple steps required to use Serial to Ethernet Connector to share serial devices over IP networks.

  1. Download and install the application on all of the computers that will be used to share serial devices access them remotely over the network. These can be physical or virtual machines.
  2. Start the software on a server and select the ‘Create Server Connection’ menu option. Modify the session parameters as needed and you are ready to share this device with remote users.
  3. Launch the program on a client computer and select the ‘Create Client Connection’ option. Configure the connection parameters for the session.
  4. Start using the connected device. Access is attained as soon as a port is shared and a device is attached.

Serial to Ethernet Connector is available for the Windows and Linux platforms. The Linux version is a command-line tool.

Hardware solutions for share Serial port over IP

There are also hardware solutions that allow you to share RS232 ports over IP/TCP/Internet. There are many models on the market that are sold under a variety of names. A typical Serial over IP extender converts the asynchronous signals of serial device communication into network-compatible TCP or UDP data packets. Hardware solutions may solve your device connectivity problems, but they have limitations that make them less versatile than using serial to IP software. Locating them properly can be challenging and you are constrained by the number of physical ports available on the unit.

Remote RS232 over Ethernet hardware devices are marketed under many names. The goal is to influence your purchasing decision, but essentially these variously named pieces of equipment all perform the same function. They present slight differences in configuration or features that are highlighted by manufacturers to differentiate their products. You will find hardware to share serial ports over IP called Serial Servers, Terminal Servers, Console Servers, and Device Servers. We’ll take a closer look at how these terms are used.

Serial Device Server

Device Servers are essentially a console or terminal server with from one to four serial interfaces. Their functionality ranges from that of a simple, unsecured terminal server to the security offered by console servers. They are marketed as more versatile devices due to the number of ports that they make available to the system.

COM Port Console

Console Servers are distinguished by the security that they provide to remote networked devices that are equipped with a console port. In addition to many peripheral devices, Windows, Linux, and Unix servers can also use a COM part console. One of the primary uses of a console server is to securely manage remote IT assets from any location. Network operation center (NOC) personnel make use of console servers to manage and control their remote equipment with the security of encrypted data transmission.

Serial Terminal Server

Terminal Servers, or Serial Servers as they are also called, are used to implement serial over IP communication with devices containing an RS232, RS422 or RS485 port. Terminal servers do not provide security features such as encryption and authentication and are used in situations where these factors are not important.

Now you know how to access remote RS232 devices using both software and hardware solutions. One of the big advantages of software is that you can create as many virtual serial ports as you need and are not limited by the physical ports on a hardware device.


Requirements: Windows XP/2003/2008/Vista/7/8/10/Server 2012
Size: 7.15MB
Version: 3.6.12435 ()
User rating: (4.8 based on 78+ users )