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How to Find Your IP Address, Default Gateway, MAC Address, and DNS Server on Ubuntu 22.04 Jammy Jellyfish Linux

As a user of Ubuntu 22.04 Jammy Jellyfish Linux, it's essential to know your system's IP address, default gateway, MAC address, and DNS server settings. This information is crucial for troubleshooting network issues, configuring networking protocols, and ensuring secure communication over the internet.

In this tutorial, we will show you how to find these vital network settings using both command-line and graphical user interface (GUI) methods.

Getting Started

To begin, open a terminal on your Ubuntu 22.04 Jammy Jellyfish desktop. You can do this by searching for 'terminal' in the application menu or by using the keyboard shortcut Ctrl + Alt + T.

Method 1: Using Command Line

To find your system's IP address, default gateway, MAC address, and DNS server settings using the command line, follow these steps:

1. Open a terminal on your Ubuntu 22.04 Jammy Jellyfish desktop.

2. Type the following command to check for internal network configuration:

```

ip addr show

```

This command will display information about your system's network interfaces, including IP addresses, netmasks, and gateway settings.

3. To check for the currently used DNS server IP address, execute the following command:

```

cat /etc/resolv.conf

```

This command will display the contents of the `/etc/resolv.conf` file, which contains information about your system's DNS servers.

4. To get your public IP address, you can use one of the following commands:

```

curl ifconfig.me

```

dig +short myip.opendns.com @resolver1.opendns.com

```

These commands will display your public IP address.

5. Additionally, the `ip addr show` command also reveals the network interface hardware address (a.k.a MAC address).

Method 2: Using GUI

To find your system's IP address, default gateway, MAC address, and DNS server settings using the graphical user interface, follow these steps:

1. Open the Settings application on your Ubuntu 22.04 Jammy Jellyfish desktop.

2. Click on the 'Network' menu and select the desired network interface (e.g., Wi-Fi or Ethernet).

3. Click on the gear wheel icon to access advanced settings.

4. In the 'IPv4' or 'IPv6' section, you will find information about your system's IP address, default gateway, and DNS server settings.

In this tutorial, we have shown you how to find your system's IP address, default gateway, MAC address, and DNS server settings on Ubuntu 22.04 Jammy Jellyfish Linux using both command-line and GUI methods. By following these steps, you will be able to troubleshoot network issues, configure networking protocols, and ensure secure communication over the internet.

My ip mac terminal