Dictionary of Information Security

system elements required to implement the services,

and (c) the performance levels required in the ele-

ments to deal with the threat environment. A com-

plete system security architecture includes

administrative security, communication security,

computer security, emanations security, personnel

security, and physical security. A complete security

architecture needs to deal with both intentional,

intelligent threats and accidental kinds of threats. See

also security policy.

security association (1) a relationship established between

two or more entities to enable them to protect data

they exchange.The relationship is used to negotiate

characteristics of protection mechanisms, but does

not include the mechanisms themselves.

(2) in IPsec usage, a simplex (uni-directional) ...