Dictionary of Information Security

C

call back procedure for identifying a remote terminal. In a

call back, the host system disconnects the caller and

then dials the authorized telephone number of the

remote terminal to reestablish the connection. Of

limited use for remote access, and recently subject to

failure because of call forwarding technologies.

Synonymous with dial back or ring back.

call tree structured and generally cascading process for

contacting personnel in an emergency, particularly

in business continuity planning. See also fan out.

capability protected identifier that identifies the object and

specifies the access rights to be allowed to the accessor

(or subject) who possesses the capability. In a capa-

bility-based system, access to protected objects such

as files is granted ...