Debian 7.5 wheezy GNOME Installed in VM VirtualBox. Secure, Manage and Maintain the System HD

Debian GNOME 7.5 Installed in VM VirtualBox. Secure, manage and maintain the system. Leave Root disabled, Enable sudo. Install and enable UFW. Update and upgrade your system using Software Updater, Synaptic and Terminal. sudo apt-get install ufw sudo ufw enable sudo apt-get update sudo apt-get upgrade sudo apt-get dist-upgrade sudo apt-get check sudo apt-get -f install sudo apt-get autoclean sudo apt-get autoremove