Cybersecurity Essentials

APPENDIX AGlossary

3DES

Also known as Triple DES, 3DES is a block cipher encryption algorithm that employs symmetric keys. It applies the DES algorithm three times to each block.

A

AAA protocol

Authentication, Authorization, and Accounting that uses different link layer protocols such as PPP and authenticates using PAP or CHAP.

access codes

Numerical sequence, typically four numbers long that identifies the authorized client(s) or user(s). Once properly authenticated, access codes may arm, disarm, or access the security system for other features.

access control

Security precautions that ensure resources are granted only to those users who are entitled to them.

access control gate

An opening in a wall or fence that functions as a passageway ...