Firewalls & Threat Prevention: Deep expertise with enterprise-class platforms (e.g., Palo Alto , Fortinet , Cisco ASA/Firepower , Meraki , Check Point , Juniper ); experience managing large fleets (200+ firewalls). Network Core: Strong knowledge of routing/switching, BGP , SD-WAN security, IPSec/SSL VPNs , VLANs, DNS, DHCP, RADIUS, Wi-Fi; packet capture/analysis (e.g., NetFlow, IP SLA).