YaST is the installation and configuration tool for openSUSE and the SUSE Linux Enterprise distributions. It is popular for its easy use and attractive graphical interface and the capability to customize your system quickly during and after the installation. YaST actually stands for Yet another Setup Tool. YaST can be used to configure your entire system. Setup hardware, configure the network, system services and tune your security settings. All these tasks can be reached from the YaST Control Center.