Password Authentication widely used line of defense against intruders widely used line of defense against intruders user provides name/login and password user provides name/login and password system compares password with the one stored for that specified login system compares password with the one stored for that specified login the user ID: the user ID: determines that the user is authorized to access the system determines that the user is authorized to access the system determines the user's privileges determines the user's privileges is used in discretionary access control is used in discretionary access control
{"Image DocumentName": "Password Authentication", "Image ImageDescription": "widely used line of defense against intruders. user provides name/login and password. system compares password with the one stored for that specified login. the user ID: determines that the user is authorized to access the system. determines the user\u2019s privileges. is used in discretionary access control. A widely used line of defense against intruders is the password system. Virtually all. multiuser systems, network-based servers, Web-based e-commerce sites, and other. similar services require that a user provide not only a name or identifier (ID) but. also a password. The system compares the password to a previously stored password. for that user ID, maintained in a system password file. The password serves. to authenticate the ID of the individual logging on to the system. In turn, the ID. provides security in the following ways: \u2022 The ID determines whether the user is authorized to gain access to a system. In some systems, only those who already have an ID filed on the system are. allowed to gain access. \u2022 The ID determines the privileges accorded to the user. A few users may have. supervisory or superuser status that enables them to read files and perform. functions that are especially protected by the operating system. Some systems. have guest or anonymous accounts, and users of these accounts have more. limited privileges than others. The ID is used in what is referred to as discretionary access control. For example, by listing the IDs of the other users, a user may grant permission to them. to read files owned by that user.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}