How to Port Forward to 2 Routers
Port forwarding is I can say for experts but it is actually very simple to do if you will just follow these steps below. Before doing that, be in mind that there are different kinds of router out there but generally speaking you should understand the terminology that manufacturers use on their router product for you to be able to configure the port forwarding.
In this example I will use the Teltonika (RTU240) router as the first device that connects to the WAN, and the TP-Link router as the 2nd device that connects to the local network. Dlink Router has DHCP enabled that provides ip addresses to the 2nd LAN (192.x.x.x) devices. 1st Teltonika Router is connected to the internet.
Based on my experience, TP-link router (with LTE backup) for instance uses "Virtual Servers" for their Port forwarding setting. Teltonika router (with LTE backup) on the other hand uses the "Firewall" terminology and under this page the port forwarding setting is accessible.
Let us assume that we are port forwarding port "80" as internal (from LAN) and we assume to use "8080" as external Port. This will allow us to remotely access the device using a web based link. Assuming that there is already a DDNS setting applied to the 2nd DLINK router.
Steps for Teltonika Router:
1. Login to the 1st router (Teltonika), enter the username and password.
2. at Port Forwarding Page (Firewall) enter the port setting
Name: Device 1
External Port: 8080
Protocal: TCP/UDP
Internal Port: 8080
IP address: IP address of the 2nd Router (DLINK), to find the ip address of the Dlink, you can use IPscanner to the teltonika router network.
3. Save your setting.
In this example I will use the Teltonika (RTU240) router as the first device that connects to the WAN, and the TP-Link router as the 2nd device that connects to the local network. Dlink Router has DHCP enabled that provides ip addresses to the 2nd LAN (192.x.x.x) devices. 1st Teltonika Router is connected to the internet.
Based on my experience, TP-link router (with LTE backup) for instance uses "Virtual Servers" for their Port forwarding setting. Teltonika router (with LTE backup) on the other hand uses the "Firewall" terminology and under this page the port forwarding setting is accessible.
Let us assume that we are port forwarding port "80" as internal (from LAN) and we assume to use "8080" as external Port. This will allow us to remotely access the device using a web based link. Assuming that there is already a DDNS setting applied to the 2nd DLINK router.
Steps for Teltonika Router:
1. Login to the 1st router (Teltonika), enter the username and password.
2. at Port Forwarding Page (Firewall) enter the port setting
Name: Device 1
External Port: 8080
Protocal: TCP/UDP
Internal Port: 8080
IP address: IP address of the 2nd Router (DLINK), to find the ip address of the Dlink, you can use IPscanner to the teltonika router network.
3. Save your setting.
Steps for D-LINK Router:
1. Login to the 2nd router (D-Link), enter the username and password.
2. at Port Forwarding Page (Virtual Servers) enter the port setting
Name: Device 1
External Port: 8080
Protocal: TCP/UDP
Internal Port: 80
IP address: IP address of the device you want to access (e.g. computer, xbox, camera, etc), to find the ip address of the device, you can use IPscanner to the 2nd LAN network.
3. Save your setting and you are good to go.
Thanks for reading.
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