Using a network-change process
A fictional administrator proposes opening access to an internal service. Which practice best supports a controlled change?
A
Document the purpose and scope, obtain the required authorization, test the rule, and review the resulting behavior.
B
Open every port first and decide whether it was necessary after an incident.
C
Keep the change secret from everyone responsible for the service.
D
Treat a successful configuration save as proof that every affected connection behaves correctly.
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