How to Share VPN Connection from Rooted Android 14 to Printer

In this article, we will discuss the steps required to share a VPN connection from a rooted Android 14 device to a printer. This can be useful for accessing printers that are located on a network that is only accessible via a VPN connection. By sharing the VPN connection, you can allow the printer to communicate with the devices on your local network, even if those devices are not directly connected to the VPN.

Prerequisites

Before we begin, there are a few prerequisites that you will need to meet:

• A rooted Android 14 device
• A VPN connection that is configured on the Android device
• A printer that is connected to the same local network as the Android device

Enabling IP Forwarding

The first step in sharing your VPN connection with your printer is to enable IP forwarding on your Android device. This will allow the device to forward network traffic between the VPN and the local network. To do this, follow these steps:

1. Open the Terminal Emulator app on your Android device.
2. Type the following command to enable IP forwarding: echo 1 > /proc/sys/net/ipv4/ip_forward
3. Press enter to run the command.

Setting up a new routing table

Next, we will need to set up a new routing table for the printer. This will allow the printer to communicate with the devices on the local network, even if those devices are not directly connected to the VPN. To do this, follow these steps:

1. Open the Terminal Emulator app on your Android device.
2. Type the following command to create the new routing table: echo '100 prisoner' > /etc/iproute2/rt_tables
3. Press enter to run the command.

Adding routes to the new routing table

Now that we have created the new routing table, we need to add routes to it. These routes will allow the printer to communicate with the devices on the local network. To do this, follow these steps:

1. Open the Terminal Emulator app on your Android device.
2. Type the following command to add a route to the new routing table: ip route add default via dev table prisoner
3. Replace with the IP address of the gateway for the VPN connection.
4. Replace with the name of the interface for the VPN connection.
5. Press enter to run the command.
6. Type the following command to add a route to the local network: ip route add / dev table prisoner
7. Replace with the IP address of the local network.
8. Replace with the netmask for the local network.
9. Replace with the name of the interface for the local network.
10. Press enter to run the command.

Configuring the printer

Finally, we need to configure the printer to use the new routing table. To do this, follow these steps:

1. Connect to the printer using a web browser.
Navigate to the network settings page for the printer.
2. Set the default gateway for the printer to the IP address of the Android device.
3. Save the changes.
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In this article, we have discussed the steps required to share a VPN connection from a rooted Android 14 device to a printer. This can be useful for accessing printers that are located on a network that is only accessible via a VPN connection. By following the steps in this article, you can allow the printer to communicate with the devices on your local network, even if those devices are not directly connected to the VPN.

References

• IP Tables documentation
• IP Route2 documentation
• VPN documentation