Final answer:
New firewall rules are usually implemented during the change management process, providing a structured approach to assess, plan, and apply changes in a controlled manner to maintain IT system security and stability.
Step-by-step explanation:
New firewall rules, if required, would be implemented during the change management process. This phase ensures that any amendments to the network, including updates to security policies and firewall configurations, are assessed, planned, and executed in a controlled manner. Implementing firewall rules typically involves several steps:
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Change management is crucial in ensuring the security and stability of IT systems while adapting to new requirements or threats.