Enterprise Firewall Goveance & Optimization▪ Led firewall rule review and optimization initiatives across enterprise FortiGate and CheckPoint environmentswithin Data Center (DC) and Disaster Recovery (DR) infrastructures.▪ Conducted in-depth analysis of 1,500+ firewall policies, identifying unused, redundant, shadowed, and overpermissive (any-any) rules.▪ Executed structured policy rationalization and rule merging to reduce rule-base complexity while maintainingoperational continuity.▪ Implemented security hardening strategies aligned with best-practice firewall architecture and regulatorycompliance requirements (OJK & BI).▪ Performed DC–DR firewall configuration comparison and alignment to ensure configuration consistency,failover readiness, and disaster recovery integrity.▪ Standardized address object and service object naming conventions to enhance auditability and long-termmaintainability.▪ Eliminated legacy and obsolete rules to reduce attack surface and improve firewall processing efficiency.▪ Supported structured change management processes, ensuring proper documentation and rollback planningfor every policy modification.Security Monitoring & Infrastructure Hardening▪ Monitored enterprise network security posture and server infrastructure in high-availability environments.▪ Implemented Linux server hardening (Rocky Linux 9) including secure configuration baseline, servicerestriction, and log monitoring enhancement.▪ Supported segmentation strategies to isolate critical services and minimize lateral movement risk.▪ Conducted security troubleshooting and root cause analysis for firewall-related incidents.▪ Generated structured security reports (daily, bi-weekly, and monthly) covering rule changes, risk exposure,and posture improvement metrics.▪ Collaborated with inteal stakeholders and clients to translate business requirements into secure andoptimized firewall policiesS