An accomplished Network Security Engineer possessing a comprehensive set of skills, including:Cisco Firepower Expertise: Proficient in troubleshooting complex issues across various Cisco ASA and Firepower platforms, including Firepower 1000, 2100, 4100, and 9300 chassis.Security Profile Management: Skillful in managing security profiles such as Application Filtering, URL Filtering, Security Intelligence, Pre-filter Policy, Anti-Malware, File blocking, and IPS Policy for Cisco Firepower.Device Maintenance: Capable of performing software upgrades and device replacements, resolving FTD/Firepower device registration issues, and troubleshooting ASA/FTD/FMC upgrade failures.Packet Analysis: Utilize packet tracer and capturing tools to troubleshoot packet forwarding or drop issues on ASA and Firepower. Analyze Wireshark captures for diagnosing connectivity problems.High Availability: Proficient in configuring ASA and FTD in HA pairs (Active/Standby) and troubleshooting failover-related issues.Resource Optimization: Skilled in troubleshooting high CPU/memory/disk utilization issues on ASA and Firepower devices, ensuring optimal performance.System Maintenance: Expertise in troubleshooting syslog, NTP, and SNMP-related issues to maintain system stability.Firewall Migration: Proficient in migrating different firewalls.VPN Expertise: Experienced in troubleshooting site-to-site and remote access VPN-related issues. Skilled in implementing Global Protect VPN, IPSec VPNs, and SSL VPNs on Palo Alto firewalls.Palo Alto Knowledge: Extensive knowledge in configuring and deploying Palo Alto Next Generation Firewalls, leveraging advanced features like APP-ID, User-ID, Global Protect, WildFire, NAT policies, and Security Profiles.Panorama Management: Profound expertise in administrating and managing Palo Alto firewalls using centralized Panorama M-100 and M-500 devices.Intrusion Detection and Prevention: Strong knowledge of Intrusion Detection System (IDS), Intrusion Prevention Systems (IPS), Data Loss Prevention (DLP), DDoS attack mitigation, and Kill Chain mitigation techniques on Palo Alto firewalls.High Availability Deployment: Knowledge of deploying Active/Standby HA modes with Session and Configuration synchronization on multiple Palo Alto firewall pairs. Knowledgeable about the application of Active/Active HA mode.My expertise lies in enhancing network security, optimizing firewall performance, and ensuring seamless VPN connectivity across Cisco and Palo Alto environments.