Problem Statement
How do you safely test new firewall rules for a production app?
Explanation
First, map required flows from architecture and logs. Stage the rule in a lower environment and capture before-and-after traffic. In prod, deploy with a temporary shadow rule in log-only if supported, or a narrow time window with rollback. Monitor latency, error rates, and dropped packets. Keep a back-out plan and document the change. This keeps users safe while you tighten policy.
Code Solution
SolutionRead Only
Change steps: inventory flows → stage test → deploy with monitoring → verify → commit or rollback
