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Kaa Documentation

Connecting Teltonika Router to Kaa

Connecting Teltonika Routers to the KaaIoT Platform via OpenVPN

This guide explains how to connect a Teltonika router to the KaaIoT platform via OpenVPN and set up remote access to the device. The steps apply to all supported models listed below.

Supported Teltonika Models

The following Teltonika devices support OpenVPN and can be connected to KaaIoT. All models run RutOS and have the same VPN configuration interface.

RUT Series — Cellular Routers

Model Connectivity Features
RUT140 Ethernet Industrial Ethernet router
RUT142 Ethernet + RS232 Serial communication gateway
RUT200 4G LTE Cat 4 Compact industrial router, Wi-Fi
RUT241 4G LTE Cat 4 + eSIM Industrial router, Wi-Fi, eSIM support
RUT260 4G LTE Cat 6 High-speed industrial router
RUT271 4G LTE Cat 4 + GNSS Router with GPS tracking
RUT301 Ethernet 5x Gigabit Ethernet ports
RUT361 4G LTE Cat 6 Compact, high-speed cellular router
RUT901 Ethernet Advanced Ethernet router
RUT951 4G LTE Cat 4 Dual SIM, Wi-Fi, 4x Ethernet
RUT956 4G LTE Cat 6 Dual SIM, Wi-Fi, RS232/RS485, GNSS
RUT976 5G NR 5G industrial router, dual SIM

RUTX Series — Advanced Routers

Model Connectivity Features
RUTX08 Ethernet 4x Gigabit Ethernet, advanced VPN
RUTX09 4G LTE Cat 6 Gigabit Ethernet, dual SIM
RUTX10 Ethernet + Wi-Fi Gigabit Ethernet, dual-band Wi-Fi, Bluetooth
RUTX11 4G LTE Cat 6 + Wi-Fi Dual SIM, dual-band Wi-Fi, Bluetooth, GNSS
RUTX12 4G LTE Cat 6 dual modem Two LTE modems for load balancing
RUTX14 4G LTE Cat 12 High-speed LTE, dual-band Wi-Fi
RUTX50 5G NR + Wi-Fi 5G, dual SIM, dual-band Wi-Fi, Bluetooth
RUTXR1 4G LTE Cat 6 Rackmount industrial router

TRB Series — IoT Gateways

Model Connectivity Features
TRB140 4G LTE Cat 4 Ethernet gateway, industrial DIN rail
TRB141 4G LTE Cat 1 Low-power IoT gateway
TRB142 4G LTE Cat 1 + RS232 Serial communication gateway
TRB143 4G LTE Cat 4 + M-Bus Smart metering gateway
TRB145 4G LTE Cat 1 + RS485 Industrial serial gateway
TRB245 4G LTE Cat 4 + RS232/RS485 Dual serial interface gateway
TRB246 4G LTE Cat 4 + RS232/RS485 Dual serial, dual SIM gateway
TRB255 4G LTE Cat M1/NB-IoT Low-power wide-area IoT gateway
TRB500 5G NR 5G industrial gateway

Note: All models listed above run RutOS with built-in OpenVPN support. The configuration steps in this guide are the same for all models — only the admin panel URL and hardware features may differ.

Prerequisites

  • Access to the KaaIoT platform (next.kaaiot.com)
  • Access to the Teltonika router admin panel
  • An internet connection on the Teltonika device (cellular or Ethernet)
  • OpenVPN configuration file (.ovpn) — will be downloaded from KaaIoT

Step 1: Create a VPN Client in KaaIoT

  1. Open the KaaIoT platform and go to Device management -> Remote access.
  2. Click the “Create VPN Client” button in the top-right corner. Figure 1: VPN Clients list in KaaIoT
  3. In the dialog that opens, fill in the fields as described below. Figure 2: Create VPN Client dialog
  4. Click “Register”.
  5. After creation, download the OpenVPN configuration file (.ovpn). Save it — you will need to upload it to the router in the next step.

Create VPN Client fields

Field What to enter
Name Device name, e.g.: my-router
Type Select “Device”
Protocol Select “TCP”
Username Username for SSH (Used only for VNC)
SSH key Can be left empty (Used only for VNC)

The .ovpn file contains all the necessary certificates, keys, and server connection details. Do not modify this file.

Once registered, the client will appear in the list with an Active status, an assigned IP address, and a subnet.

Step 2: Upload the OpenVPN Config to the Teltonika Router

  1. Log in to the Teltonika router admin panel.
  2. Go to Services -> VPN -> OpenVPN. Figure 3: OpenVPN page on Teltonika (Services -> VPN -> OpenVPN)
  3. In the Client section at the bottom, click “Add” to create a new OpenVPN client instance.
  4. Click “Edit” on the newly created instance to open its configuration.
  5. Configure the settings as described below. Figure 4: OpenVPN client configuration — upload .ovpn file
  6. Click “Save & Apply”.
  7. Wait a few seconds and verify that the status changes to “Connected” and a local IP address is assigned (matching the IP from KaaIoT).

OpenVPN client settings

Setting Value
Enable configuration Toggle ON
Role Client
Name Kaaiot Cloud (or any descriptive name)
Configuration type Upload config file
OpenVPN configuration file Upload the .ovpn file downloaded from KaaIoT

If using manual configuration instead of uploading an .ovpn file, you will need to set: Authentication = TLS, Protocol = TCP, Port = 11194, Remote host = vpn-service.kaaiot.com, and upload the CA certificate, client certificate, and client key separately.

Step 3: Configure Firewall Zones on the Router

For the KaaIoT platform to reach the router and devices behind it through the VPN tunnel, the firewall zones must be configured to allow traffic between the OpenVPN interface and the local network.

  1. In the Teltonika admin panel, go to Network -> Firewall -> Zones. Figure 5: Firewall Zones configuration (Network -> Firewall -> Zones)
  2. Make sure the three zones (LAN, WAN, OpenVPN) are configured as described below.
  3. Click “Save & Apply”.

LAN Zone

Setting Value
Source -> Destination lan -> wan, openvpn
Input Accept
Output Accept
Forwarding inside zone Accept
Masquerading Off

WAN Zone

Setting Value
Source -> Destination wan -> Reject
Input Reject
Output Accept
Forwarding inside zone Reject
Masquerading On

OpenVPN Zone

Setting Value
Source -> Destination openvpn -> lan, wan
Input Accept
Output Accept
Forwarding inside zone Reject
Masquerading On

Important: The key settings are: (1) the LAN zone must forward to both wan AND openvpn, (2) the OpenVPN zone must forward to lan and wan, and (3) Masquerading must be ON for both wan and openvpn zones. Without these settings, remote access through the VPN will not work.

Step 4: Add a Proxy Config in KaaIoT

Once the VPN connection is active, you can access the router’s web interface remotely through the KaaIoT platform without needing a direct VPN client on your computer.

  1. In KaaIoT, go to Device management -> Remote access.
  2. Click on your VPN client name (e.g., my-router) to open its details.
  3. Open the “Proxy configs” tab. Figure 6: Proxy configs tab with existing configurations
  4. Click “Add proxy config” in the top-right corner.
  5. Fill in the fields as described below. Figure 7: Add / edit proxy config dialog
  6. Click “Create” to save the proxy configuration.

Proxy config fields

Field What to enter
Name Teltonika Admin UI (or any descriptive name)
Type HTTP
Proxy port 80 (the port of the web service on the device)
Custom headers Can be left empty

A unique domain will be automatically generated (e.g., proxy-<id>.vpn-service.kaaiot.com). Click the “Open” button to access the Teltonika admin panel in your browser.

Figure 8: Teltonika admin panel accessed remotely via KaaIoT proxy

Tip: You can create multiple proxy configs to access different services behind the router. For example, if an energy meter web interface runs on port 20000, add another proxy config with Proxy port = 20000 and name it “Meter UI”.

Verification

After completing all steps, verify the setup:

  • In KaaIoT (Remote access): The VPN client status is Active
  • On Teltonika (Services -> VPN -> OpenVPN): The client status is Connected with an assigned IP address
  • In KaaIoT (Proxy configs): Clicking “Open” successfully opens the router’s admin panel
  • You can log in to the Teltonika admin panel through the proxy link

Troubleshooting

Problem Solution
VPN client shows inactive in KaaIoT Verify the .ovpn file is uploaded on the Teltonika, the OpenVPN client is toggled ON, and the router has internet access.
OpenVPN status is “Disconnected” on Teltonika Click the Logs link next to the client to check error details. Common causes: incorrect .ovpn file, no internet, firewall blocking port 11194/TCP.
“Open” button in proxy config shows a blank or error page Check that firewall zones are configured correctly (openvpn zone must forward to lan). Verify the proxy port matches the actual service port (e.g., 80 for web UI).
Cannot reach devices connected behind the router Make sure Masquerading is ON for the openvpn zone and that the LAN zone forwards to openvpn. The device behind the router should use the router as its default gateway.
VPN connects but disconnects frequently Check signal strength on the Teltonika (Status -> Overview -> Internal Modem). Weak cellular signal can cause unstable VPN connections. Consider using TCP protocol for more reliable connections.

References

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