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

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Answer: C