Access control is a security technique that can be used to regulate who or what can view or use resources in a computing environment. There are two main types of access control: physical and logical. Physical Access controls are security features that control the access to campuses, buildings, rooms and physical IT assets. Access controls give organization the ability to control, restrict, monitor, and protect resource availability, integrity and confidentiality. Logical access controls limit connections to computer networks, system files and data.
A hydraulic roadblock is an installation set up, an obstruction in a road to control or blocks traffic along a road or a specific area.



















