A Step-by-Step Guide on How to Change Default Gateway on Ubuntu 20

Changing the default gateway on your Ubuntu 20 system is crucial for managing your network traffic efficiently. A default gateway acts as an access point for networked devices that communicate outside their subnet. Moreover, when paired with efficient tools such as APIPark, Nginx, and API management solutions, network management becomes seamless and robust. In this guide, you will learn how to change the default gateway in Ubuntu 20, and we’ll also delve into some of the benefits that utilizing APIPark brings to API management and network operations.

Understanding Default Gateway

A default gateway is a networking device that routes traffic from a local network to devices on a remote network. In simpler terms, it serves as a point of exit for your data when it needs to jump from your local network to the internet or another external network. In most setups, your router is configured to act as the default gateway.

In Ubuntu, especially from version 20 onwards, managing network configurations can be efficiently done using various network management tools, including the terminal, Network Manager, and configuration files.

The Importance of Changing the Default Gateway

Changing the default gateway becomes necessary in various scenarios:

• When you are moving to a different network.
• When there are multiple routers, and you need to redirect traffic to a specific path.
• When configuring advanced network setups requiring API management and routing, like using APIPark for services.

Changing the Default Gateway in Ubuntu 20

Method 1: Using the Terminal

The terminal is one of the most powerful ways to change the default gateway in Ubuntu. You can follow these steps:

1. Open Terminal: You can press Ctrl + Alt + T to open it.

2. Check Current Gateway: Use the following command to view your current default gateway:
   bash
ip route show

3. Change Gateway Temporarily: To change the default gateway temporarily (this change will be lost after a reboot), use:
   bash
sudo ip route add default via [NEW_GATEWAY_IP]
   Replace [NEW_GATEWAY_IP] with the IP address of the new gateway.

4. Verify the Change: You can check to ensure the change has taken effect by running:
   bash
ip route show

5. Permanent Change: To make the change permanent, update the /etc/netplan/01-netcfg.yaml file. Open it with:
   bash
sudo nano /etc/netplan/01-netcfg.yaml

   Locate the section with your network interface details and modify it. Here’s an example configuration:
   yaml
network:
version: 2
renderer: networkd
ethernets:
eth0:
dhcp4: true
gateway4: [NEW_GATEWAY_IP]

6. Apply the Changes: Save the changes and apply them by running:
   bash
sudo netplan apply

7. Check Again: Finally, ensure your configuration is correct by checking with:
   bash
ip route show

Method 2: Using GUI

Ubuntu 20 Desktop provides a graphical interface for changing network settings. To do this:

1. Open Network Settings: Click on the network icon in the upper right corner and select ‘Settings’.

2. Select Network: Choose the appropriate network interface from the left panel.

3. Edit the Connection: Click on the gear icon to open the settings for the selected connection.

4. IPv4 Settings: Navigate to the ‘IPv4’ tab, and under ‘Router’, enter your new gateway IP.

5. Save Changes: Click ‘Apply’ to save the changes.

6. Restart Network: You may need to disable and re-enable the network for the changes to take effect.

Using APIPark in Network Management

Integrating APIPark with your API management solution offers numerous benefits for projects that involve networking configurations such as those we discussed above. Here’s how you can leverage APIPark:

Advantages of Utilizing APIPark

• API Service Centralization: Manage all your network configurations and API integrations in one centralized API service square, helping to avoid the chaos of decentralized management.

• Comprehensive Lifecycle Management: With APIPark, manage the entire lifecycle of your APIs, from design to deprecation, without losing track of your networking components.

• Multi-Tenant Management: If you run multiple applications or services that need separate configurations, APIPark allows for streamlined, independent management.

• Approval Workflows: Ensure compliance and proper governance around your API calls, especially when changing critical networking configurations.

Example of using APIPark

Here is an example demonstrating how you can securely call an API service using APIPark, taking advantage of basic identity authentication with an API key.

curl --location 'http://api.apipark.com/v1/some_endpoint' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer YOUR_API_KEY' \
--data '{
  "param1": "value1",
  "param2": "value2"
}'

In this command, ensure that you replace YOUR_API_KEY with your actual API key provided by APIPark.

APIPark is a high-performance AI gateway that allows you to securely access the most comprehensive LLM APIs globally on the APIPark platform, including OpenAI, Anthropic, Mistral, Llama2, Google Gemini, and more.Try APIPark now! 👇👇👇

Additional Considerations

In addition to changing the default gateway and utilizing API management platforms like APIPark, consider employing Nginx as your API gateway. Nginx can manage and route API requests efficiently, providing additional layers of security and performance enhancements needed for modern applications.

In summary, changing the default gateway on Ubuntu 20 is a straightforward process, whether through terminal commands or graphical methods. Integrating powerful tools like APIPark and Nginx not only simplifies API management but also enhances your ability to handle network configurations efficiently.

Conclusion

Whether you’re managing a simple home network or a complex server architecture involving multiple APIs, understanding how to correctly configure your default gateway is essential. Leveraging tools like APIPark can facilitate your operational processes, allowing you to focus more on development and innovation. This guide should equip you with the knowledge needed to navigate these processes smoothly in Ubuntu 20.

Summary of Steps to Change the Default Gateway

By following these instructions, you’ll be able to manage your network settings efficiently while integrating advanced API management features.

Through these tools and techniques, you can navigate and manage networks like a pro, enhancing both connectivity and API performance. Enjoy your enhanced network management experience!

🚀You can securely and efficiently call the gemni API on APIPark in just two steps:

Step 1: Deploy the APIPark AI gateway in 5 minutes.

APIPark is developed based on Golang, offering strong product performance and low development and maintenance costs. You can deploy APIPark with a single command line.

curl -sSO https://download.apipark.com/install/quick-start.sh; bash quick-start.sh

In my experience, you can see the successful deployment interface within 5 to 10 minutes. Then, you can log in to APIPark using your account.

Step 2: Call the gemni API.