A static or fixed IP address is an IP address that does not change. Whether you reboot your device or home router, your device with a static IP address will get the same IP address. The opposite of a static IP address is the dynamic IP address. A device that does not have a static IP address will get a dynamic IP address assigned by the DHCP (Dynamic Host Configuration Protocol) server, and it may change from time to time.
By default, a device connected to your home router whether it’s using cable or connected through WiFi will most likely get a dynamic IP address. And, if you use your Ubuntu 20.04 also as an FTP server of web server you would want to configure a static IP address for it, so you can reach the server using the same IP address. In this tutorial, we will show you how to configure a static IP address on Ubuntu 20.04.