Legal drinking age. The legal drinking age is the age at which a person can legally consume or purchase alcoholic beverages. These laws cover a wide range of issues and behaviors, addressing when and where alcohol can be consumed.
An open system is a system that has external interactions. Such interactions can take the form of information, energy, or material transfers into or out of the system boundary, depending on the discipline which defines the concept.
The Open Vulnerability Assessment System (OpenVAS) is a free network security scanner platform, with most components licensed under the GNU General Public License (GNU GPL). The main component is available via several Linux packages or as a downloadable Virtual Appliance for testing/evaluation purposes.