A$($n$)\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ is another name for the boundary around a system where external inputs can interact with a system.

A$($n$)\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ is another name for the boundary around a system where external inputs can interact with a system.

network interface

firewall

attack surface

virtual environment