A company's security team has recently upgraded the network firewall to a newer model to enhance security features. As a security analyst, what is the MOST important action to perform following the upgrade to ensure ongoing operational efficiency?
Update the security policies and network configuration documentation to reflect changes made by the new firewall.
Perform a complete network penetration test to identify potential new vulnerabilities introduced.
Implement additional firewall rules to immediately increase the security posture without a scheduled review.
Schedule a meeting with the stakeholders to discuss the possibility of future upgrades.