Mohammed Khan

Senior Network Security Engineer @UnitedHealth Group

Plano, TX, US

Utilized FortiGuard services (antivirus, antispam, application control) to enhance threat detection and prevention.• Configured and troubleshot FortiGate firewalls (1500D, 40/60/80/100 series), including VPN setups for secure remote and site-to-site communications.• Implemented Zscaler proxy configurations and cloud firewall solutions for HQ and remote offices.• Installed and migrated Palo Alto firewalls (7k, 5k, 4k, 3k series) with centralized management via Panorama (M-series).Extensive experience configuring, optimizing, and troubleshooting HPE Aruba & ProVision switches, Comware OS, and FlexNetwork architecture.• Deep understanding of VLANs, STP, OSPF, BGP, VRRP, and MPLS in HPE environments for high availability and scalability.• Skilled in Ansible, Python, ACLs, NAC (ClearPass), and QoS for secure, automated networking solutions.• Configured, maintained, and upgraded Cisco IOS 17.x on Catalyst series (Cat9K) switches, ensuring high availability and optimal performance in enterprise networks.• Deployed and troubleshot Cisco IOS 16.x on Catalyst series (Cat3K) switches, optimizing Layer 2/3 functionalities, VLANs, and STP configurations.• Managed Cisco Catalyst switches across various platforms, implementing advanced network security policies, QoS, and automation to enhance network efficiency.• Conducted software lifecycle management, including firmware upgrades, patching, and migrations for Cisco Catalyst switches running IOS 16.x and 17.x.• Configured and optimized EVPN-VXLAN, MPLS, and SDA Fabric on Cat9K switches for modern enterprise networking solutions.• Conducted troubleshooting and log analysis on ASA firewalls using ASDM, CLI, and Syslog for threat mitigation and network optimization.• Integrated Cisco ASA with other security tools such as Firepower, IDS/IPS, and SIEM solutions for enhanced security posture.• Performed firmware upgrades, high availability (HA) setup, and failover testing on Cisco ASA devices.