Wide Area Network also known as WAN
Answer: as a whale attack
Explanation:
A whale attack is simply refered to as an attack that is utilized by cybercriminals and in this case, a senior player such as the CEO is targeted in the company and the aim is to steal sensitive information from them or steal money or gain access to their computer for fraudulent purposes.
Based on the explanation above, the attack called into is a whale attack.
The applications you have open, and some background processes.
Every application has access to specific opened port. If you only make a exception for the specific application only that application can bypass the firewall.