terms
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| access control | granting or denying approval to use specific resources
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| roles in access control | owner
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| roles in access control | custodian
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| roles in access control | end user
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| basic steps in access control | identification
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| basic steps in access control | authentication
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| basic steps in access control | authorization
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| basic steps in access control | access
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| authentication | checking the persons credentials or id when logging into the system
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| authorization | granting permission to take action
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| access control model | standard that provides a predefined framework for hardware and software developers who need to implement access control in their devices or applications
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| four major access control models | mandatory access control
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| four major access control models | discretionary access control
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| four major access control models | role based access control
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| four major access control models | rule based access control
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| MAC | typically found in military settings in which security is of supreme importance
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| two elements of MAC | labels
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| two elements of MAC | levels
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| two major implementations of mandatory access control | lattice model
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| two major implementations of mandatory access control | bell-lapadula model
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| lattice | a type of screen or femcing that is used as a support for climbing garden plants
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| bella lapudla model | protection prevents subjects from creating a new object or performing specific functions on objects that are at a lower level than their own
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| microsoft windows four security levels | low
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| microsoft windows four security levels | medium
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| microsoft windows four security levels | high
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| microsoft windows four security levels | system
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| dac | discretionary access control
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| dac | least restrictive
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| dac model | every object has an owner who has total control over that object
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| dac has two significant weaknesses | poses risks in that it relies on decisions by the end user to set the proper level security
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| dac has two significant weaknesses | subjects permissions will be inherited by any programs that the subject executes
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| role based access control | rbac
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| rbac | non discretionary access control
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| rbac | based on a users job function within an organization
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| rbac model | assigns permissions to particular ???? pg 340
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| access control models | mandatory access control
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| access control models | discretionary access control
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| access control models | role based access control
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| access control models | rule based access control
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| establishing a set of best practices for limiting access | can also help secure systems and data
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| best practices for access control | separation of duties
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| best practices for access control | job rotation
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| best practices for access control | least priviliege
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| best practices for access control | implicit deny
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| best practices for access control | mandatory vacation
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| separation of duties | requires that if the fraudulent application of a process could potentially result in breach of security,then the process should be divided between two or more individuals
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| job rotation | individuals are periodically moved from one job responsibility to another
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| job rotation advantages | limits the amount of time that individuals are in a position to manipulate security configurations
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| job rotation advantages | helps to expose any potential avenues for fraud by having multiple individuals with different perspectives learn about the job and uncover vulnerabilities that someoneelse may have overlooked
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| job rotation advantages | reduce burnout
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| challenges of least privileges | legacy applications
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| challenges of least privileges | common administrative tasks
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| challenges of least privileges | software installation/upgrade
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| least privilege in access control | means that only the minimum amount of privileges necessary to perform a job or function should be allocated
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| object | specific resource
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| subject | user or process function on behalf of the user
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| implicit deny | means that if a condition is not explicitly met then the request for access is rejected
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| dac model that uses explicit deny | have stronger security because access control to all users is denied by default and permissions must be explicitly granted to approved users
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| acess control list | set of permissions that are attached to an object
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| access control entry items | security identifier
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| access control entry items | an access mask that specifies the access rights controlled by the ace
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| access control entry items | a flag that indicates the type of ACE
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| access control entry items | a set of flags that determine whether objects can inherit permission
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| operation | the action that is taken by the subject over the object
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| labels | represent the relative importance of the object
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| in a system using mandatory access control every entitiy | is an object
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| MAC granst permissions by | matching object labels with subject labels based on their respective levels
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| rule based role based access control | can dynamically assign roles to subjects based on a set of rules defined by a custodian
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| sudo | superuser do command
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| sudo | prompts the user for their personal password and confirms the request to execute a command
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| registry | a database that stores settings and options for the operating system
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| group policy | windows feature that provides centralized management and configuration of computers and remote users using the microsoft directory services active directory
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| rbac | third access control model assigns permissions to particular roles in the organization, and then assigns users to those roles
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| rule based role based access control | dynamically assigns roles pg 340
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| local group policy | lgp
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| lgp | used to configure settings for systems that are not part of active directory
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| two common account restrictions | time of day
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| two common account restrictions | account expiration
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| time of day restrictions | can be used to limit when a user can log on to a system
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| orphaned accounts | user accounts that remain active after an employee has left an organization
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| dormant accounts | an account that has not been accessed for a lengthy time period
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| recommendations for dealing with orphaned or dormant accounts | establish a formal process
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| recommendations for dealing with orphaned or dormant accounts | terminate access immediately
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| recommendations for dealing with orphaned or dormant accounts | monitor logs
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| account expiration | process of setting a users account to expire
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| AAA | authentication,authorization,accounting
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| most common type of authentication and AAA servers | RADIUS
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| most common type of authentication and AAA servers | Kerberos
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| most common type of authentication and AAA servers | Terminal access control access control systems
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| most common type of authentication and AAA servers | generic servers built on lightweight directory access protocol
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| radius | remote authentication dial in user service
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| kerberos | used to verify the identity of networked users
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| radius is suitable for | high volume service control applications
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| supplicant | wireless device
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| radius | allows an organization to maintain user profiles in a central database that remote servers can share
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| terminal access control access control system | tacacs
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| tacacs | is an authentication service commonly used on unix devices that communicates by forwarding user authentication information to a centralized server
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| directory service | database stored on the network itself that contains information about users and network devices
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| RADIUS features | user datagram protocol
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| RADIUS features | combined authentication and authorization
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| RADIUS features | unencrypted communication
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| TACACS features | transmission control protocol
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| TACACS features | encrypted communication
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| TACACS features | interacts with kerberos
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| TACACS features | can authenticate network devices
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Popular Computers sets