Introduction:

In Ubuntu Desktop, managing network configurations, including changing the IPv4 address, can be essential for various purposes such as troubleshooting network issues, setting up a local development environment, or connecting to different networks. This guide will walk you through the steps to change the IPv4 address in Ubuntu Desktop.

Step 1: Access Network Settings

To begin, you’ll need to access the network settings. In Ubuntu Desktop, this can be done through the graphical user interface (GUI).

1. Click on the network icon located in the top-right corner of the screen. This icon resembles a series of bars or a Wi-Fi symbol, depending on your network connection type.

2. From the dropdown menu, select “Settings” to open the Network Settings window.

Step 2: Navigate to IPv4 Settings

Once you’re in the Network Settings window, navigate to the IPv4 settings section.

1. In the Network Settings window, you’ll find a list of available connections. Locate the connection for which you want to change the IPv4 address and click on it to select it.

2. After selecting the connection, click on the gear icon (⚙️) next to it. This will open the settings for that particular connection.

3. In the connection settings window, find and click on the “IPv4” tab. This tab contains all the settings related to IPv4 configuration.

Step 3: Change IPv4 Address

Now that you’re in the IPv4 settings, you can change the IPv4 address according to your requirements.

1. In the IPv4 tab, you’ll see several options, including the method used to obtain the IPv4 address. By default, it is usually set to “Automatic (DHCP)”.

2. To manually set a specific IPv4 address, switch the method to “Manual”.

3. Once you switch to manual mode, you’ll be able to input the desired IPv4 address, subnet mask, gateway, and DNS servers manually.

4. Enter the appropriate IPv4 address, subnet mask, gateway, and DNS server details as per your network configuration. Make sure to enter the information accurately to avoid any connectivity issues.

Step 4: Apply Changes

After you’ve entered the new IPv4 address and related details, apply the changes to save the new configuration.

1. Click on the “Apply” button or the “Save” button (depending on your Ubuntu version) to apply the changes to the network configuration.

2. Once the changes are applied, close the network settings window.

Step 5: Verify Changes

To ensure that the changes have been successfully applied and that your Ubuntu Desktop system is using the new IPv4 address:

1. Open a terminal window by pressing `Ctrl` + `Alt` + `T`.

2. In the terminal, type the command `ifconfig` or `ip addr` and press `Enter`. This will display the network interface information, including the IPv4 address.

3. Verify that the IPv4 address listed for the network interface matches the one you configured earlier.

Conclusion:

Changing the IPv4 address in Ubuntu Desktop can be necessary for various networking purposes. By following the steps outlined in this guide, you should be able to successfully change the IPv4 address on your Ubuntu Desktop system. Always remember to double-check the configuration to ensure accurate network settings.