Configuring Ping Pong Link Device via NAT with Two Routers

Configuring a Ping Pong Link Device via NAT with Two Routers

In this article, we will discuss how to configure a Ping Pong Link Device via NAT using two routers. This setup is useful when you want to connect two networks and enable communication between them. We will cover the key concepts and provide detailed instructions to help you understand and implement this configuration.

Prerequisites

• Two routers, one connected to the Internet (WAN IP XXX.XXX.XXX.XXX) with an internal IP address of 192.168.10.1 and DHCP server enabled (192.168.10.*)
• Second router connecting to the first one via WAN

Key Concepts

• NAT (Network Address Translation): A method of remapping one IP address space into another. It is used to improve security and decrease the number of globally unique IP addresses needed.
• Ping Pong Link Device: A device that allows communication between two networks by forwarding packets between them.
• Router: A device that forwards data packets along networks. In this case, we will be using two routers to connect two networks.

Configuring the First Router

The first router is connected to the Internet and has an internal IP address of 192.168.10.1. To configure the first router, follow these steps:

1. Connect to the router's web interface using a web browser.
2. Navigate to the NAT settings.
3. Create a new NAT rule that maps incoming traffic on a specific port to an internal IP address.

   WAN IP: *
   Protocol: TCP
   External Port: 12345
   Internal IP: 192.168.10.50
   Internal Port: 80
   

This rule maps incoming traffic on port 12345 to an internal IP address of 192.168.10.50 on port 80. This will allow devices on the second network to access a web server running on the first network.

Configuring the Second Router

The second router connects to the first router via WAN. To configure the second router, follow these steps:

1. Connect to the router's web interface using a web browser.
2. Navigate to the NAT settings.
3. Create a new NAT rule that maps incoming traffic on a specific port to an internal IP address.

   WAN IP: 192.168.10.1
   Protocol: TCP
   External Port: 12345
   Internal IP: 192.168.20.50
   Internal Port: 80
   

This rule maps incoming traffic on port 12345 to an internal IP address of 192.168.20.50 on port 80. This will allow devices on the Internet to access a web server running on the second network.

Configuring the Ping Pong Link Device

The Ping Pong Link Device is a device that allows communication between the two networks. To configure the Ping Pong Link Device, follow these steps:

1. Connect to the Ping Pong Link Device's web interface using a web browser.
2. Navigate to the routing settings.
3. Add a new route that forwards traffic between the two networks.

   Network 1: 192.168.10.0/24
   Gateway: 192.168.10.1
   Network 2: 192.168.20.0/24
   Gateway: 192.168.20.1
   

This route forwards traffic between the two networks using the gateways specified for each network.

In this article, we have discussed how to configure a Ping Pong Link Device via NAT using two routers. We have covered the key concepts and provided detailed instructions to help you understand and implement this configuration. By following these steps, you will be able to connect two networks and enable communication between them.

References

• Network Address Translation (NAT)
• Ping-pong protocol
• Router (computing)