Naren N.s

CCNA Certified Network & Security Engineer with 4 years of experience in enterprise networking, firewall administration, and network security. Hands-on experience managing Palo Alto and FortiGate firewalls, including security policy management, NAT, VPN, SD-WAN, URL Filtering, App Control, IPS, QoS, and log analysis. Experienced in Cisco routing & switching, Meraki, Aruba, ClearPass, Zabbix, and enterprise network operations.

Network Engineer - Isha Foundation - Coimbatore

(2022-08)

• Managed and administered Palo Alto and FortiGate firewalls, including security policies, NAT, IPSec VPN, DNS Proxy, SD-WAN, App Control, URL Filtering, QoS, Captive Portal, log analysis, and firmware upgrades
• Optimized firewall policies to ensure secure connectivity across branch environments
• Performed firewall health checks, policy optimization, firmware upgrades, backup/restore, and troubleshooting for Palo Alto and FortiGate environments
• Monitored firewall traffic logs and performed troubleshooting to identify and mitigate network security issues
• Assisted in implementing secure access policies and maintaining enterprise security standards
• Troubleshot L2 network issues including routing problems, VLAN issues, DNS/DHCP failures, and connectivity incidents
• Supported enterprise network infrastructure comprising Cisco switches, Aruba switches, wireless access points, Palo Alto firewalls, and FortiGate firewalls
• Troubleshot NAC-related incidents involving ClearPass authentication, endpoint access, and policy enforcement
• Worked on VLAN segmentation, trunk configuration support, and network access troubleshooting
• Performed root cause analysis (RCA) for recurring incidents and implemented preventive measures
• Coordinated with internal teams and vendors to resolve network incidents within SLA timelines
• Performed event monitoring and alert management using Zabbix and PRTG to ensure high network availability and timely incident response
• Configured and troubleshot Cisco Meraki wireless networks, SSIDs, RF profiles, guest access, and captive portal authentication
• Worked with ClearPass 802.1X authentication and wireless access management
• Assisted in configuring captive portal solutions and troubleshooting wireless connectivity issues
• Supported Aruba switching environments and handled VLAN assignments and port management activities
• Created dashboards, triggers, alert actions, email notifications, Reports and SLA monitoring using Zabbix and PRTG
• Utilized ThousandEyes for network path analysis and latency troubleshooting
• Monitored network alerts and proactively responded to incidents to reduce downtime
• Maintained SOPs, network diagrams, incident reports, and operational documentation
• Worked with ticketing systems for incident, service request, and change management activities
• Implemented and configured PRTG monitoring solutions across branch and sub-branch locations to enhance proactive monitoring and reduce downtime

B.Sc - Information Technology - Rathinam College of Arts & Science (2018 - 2021)