There needed to be a copy firewall in case the firewall got corrupt in the process.
Step-by-step explanation:
Creation of a firewall is a long and complicated process that requires a lot of funds and intellectual capacity of the It firm to be put in.
It is also vital to keep updating it as well to keep their systems up to date.
For such an often urgent problem there has to be a backup ready in the case that the computer does not actually accept the firewall or there is some issue in the installation in which case they need a safe to fall back on to save eventual time.