CCSP Self-Study: Securing Cisco IOS Networks (SECUR)

D

data authentication.

Process of verifying that data has not been altered during transit (data integrity) or that the data came from the claimed originator (data origin authentication).

data confidentiality.

A security service where the protected data cannot be observed.

Data Encryption Standard (DES).

Standard cryptographic algorithm developed by the U.S. National Bureau of Standards.

data flow.

A grouping of traffic, identified by a combination of source address/mask, destination address/mask, IP next protocol field, and source and destination ports, where the protocol and port fields can have the values of any. In effect, all traffic matching a specific combination of these values is logically grouped together into a data flow. A data flow can ...