Security Analyst | L2 Network & Endpoint Security Engineer
Managed Forescout NAC infrastructure protecting 1,80,000+ endpoints and 20,000+ network devices across PAN-India banking environments. Implemented 802.1x port-based authentication (EAP-TLS / PEAP) across enterprise LAN segments; integrated Forescout with RADIUS, Active Directory, and Cisco switches for identity-based network admission control. Created and configured endpoint security policies, posture assessment rules, quarantine workflows, and remediation playbooks enforcing patch compliance, Endpoint assessment and domain membership at scale. Handled enterprise access-control and authentication incidents weekly while maintaining SLA targets; led L2 troubleshooting on RADIUS failures, certificate onboarding issues, and VLAN assignment anomalies. Investigated security incidents using Syslog, Wireshark, and enterprise log tools; correlated NAC, Active Directory, and RADIUS logs to identify access-control issues and reduce mean time to resolution. Executed enterprise NAC migrations, infrastructure upgrades, and patch cycles across banking environments; coordinated CAB/change management activities with zero production disruption. Automated NAC compliance reporting workflows, reducing manual effort by 50% and enabling real-time endpoint posture dashboards for CISO-level stakeholders. Received client appreciation for successful delivery of security upgrade activities and authentication infrastructure stabilization across multiple major banking clients.
Doyen Infosolutions
