Firewall change window communication template
Overview
Stakeholders tolerate downtime when expectations are crisp.
Template blocks
Reason for change, expected outage minutes, rollback plan, contact phone, monitoring dashboard link.
Timing
Send T-48h and T-2h reminders for production cuts.
Post-change
Verification checklist email: NAT rules, VPN counts, SIP ALG edge tests.
Archive
Paste communications into change ticket for auditors.
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