Which of the following should the network engineer perform NEXT to ensure all the firewalls are hardened successfully?

A network engineer configured new firewalls with the correct configuration to be deployed to each remote branch. Unneeded services were disabled, and all firewall rules were applied successfully .

Which of the following should the network engineer perform NEXT to ensure all the firewalls are hardened successfully?
A . Ensure an implicit permit rule is enabled
B . Configure the log settings on the firewalls to the central syslog server
C . Update the firewalls with current firmware and software
D . Use the same complex passwords on all firewalls

Answer: C