Setting Up Port Forwarding: iMac to Raspberry Pi to PC using Termius

Setting up Port Forwarding: iMac <--> Raspberry Pi <--> PC using Termius

Port forwarding is a technique used to redirect network traffic from one computer to another. This article will guide you through the process of setting up port forwarding from your iMac to a Raspberry Pi, and then to a PC using the Termius app. We will assume that you have access to the Raspberry Pi's public IP address, but not the iMac's.

Prerequisites

• An iMac with Termius installed
• A Raspberry Pi with a public IP address
• A PC with Termius installed

Step 1: Setting up the Raspberry Pi

First, you need to ensure that the Raspberry Pi is accessible from the internet. To do this, you will need to set up port forwarding on your router. The exact steps to do this will vary depending on the make and model of your router, but the general process is as follows:

1. Log in to your router's administration interface
2. Find the port forwarding settings
3. Create a new port forwarding rule
4. Set the external port to the port you want to forward (e.g. 22 for SSH)
5. Set the internal IP address to the IP address of your Raspberry Pi
6. Save the changes

Once you have set up port forwarding on your router, you should be able to connect to the Raspberry Pi from the internet using its public IP address and the forwarded port.

Step 2: Setting up Termius

Next, you need to set up Termius on your iMac and PC. Termius is a cross-platform SSH client that allows you to manage multiple SSH connections from a single interface. To set up Termius, follow these steps:

1. Download and install Termius on your iMac and PC
2. Launch Termius on both devices
3. Add a new host in Termius on your iMac
4. Enter the public IP address of your Raspberry Pi and the forwarded port
5. Save the host
6. Repeat the process on your PC

Once you have set up Termius on both devices, you should be able to connect to the Raspberry Pi from both your iMac and PC.

Step 3: Setting up Port Forwarding in Termius

Finally, you need to set up port forwarding in Termius. This will allow you to forward network traffic from your iMac to your PC via the Raspberry Pi. To set up port forwarding in Termius, follow these steps:

1. Connect to the Raspberry Pi from your iMac using Termius
2. Click on the "Forwarding" button in the Termius interface
3. Click on the "+" button to add a new forwarding rule
4. Enter the local port on your iMac that you want to forward (e.g. 8080)
5. Enter the remote port on your PC that you want to forward to (e.g. 80)
6. Save the forwarding rule

Once you have set up port forwarding in Termius, you should be able to access network services on your PC from your iMac via the Raspberry Pi. For example, if you have a web server running on your PC, you should be able to access it from your iMac by navigating to http://localhost:8080 in your web browser.

In this article, we have covered the process of setting up port forwarding from an iMac to a Raspberry Pi, and then to a PC using the Termius app. We have assumed that you have access to the Raspberry Pi's public IP address, but not the iMac's. By following the steps outlined in this article, you should be able to forward network traffic from your iMac to your PC via the Raspberry Pi, allowing you to access network services on your PC from your iMac.

References

• Termius
• How to Forward Ports on Your Router
• Port Forwarding