Arun kumar kumar
Network engineer
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Skills & Expertise (28)
Work Experience
Network Engineer
TVS Electronics (TVS Credit Services)
Jul 2024 - Present
Administer and manage 80+ Palo Alto Firewalls through Panorama, supporting centralized policy management, firewall monitoring, security event analysis, and operational support. Configure and manage security policies, security rules, NAT configurations, application-based policies, and security profiles based on business and security requirements. Configure and maintain GlobalProtect Remote Access VPN and IPSec Site-to-Site VPN; troubleshoot VPN connectivity, access, NAT, and policy-related issues. Implement and manage URL Filtering, Anti-Virus, Anti-Spyware, Vulnerability Protection, and WildFire security services. Manage High Availability (HA) Active/Passive firewall deployments and monitor firewall health, performance, availability, and security compliance. Support firewall deployments, migrations, upgrades, and cutover activities with minimal downtime; coordinate with network and security teams during change activities. Perform firewall rule optimization, security policy audits, and hardening activities to strengthen security and minimize attack surface. Troubleshoot network connectivity and policy-enforcement issues using firewall logs, monitoring information, and incident analysis; perform root cause analysis. Implement IP and URL blocking based on IOC alerts, security requirements, and compliance guidelines. Support SOC investigations through firewall log analysis and incident validation; participate in incident and change management activities. Prepare and maintain firewall configuration documentation, network diagrams, configuration backups, and change records. Monitor MPLS and Internet Leased Line (ILL) connectivity across multiple enterprise locations using PRTG Network Monitor. Manage DHCP scopes, IP pools, lease reservations, address allocation, DNS records, and name-resolution services. Support NAC operations using ClearPass, including access monitoring, authentication status checks, and configuration support. Perform switch configuration, network connectivity troubleshooting, and port-level issue resolution. Configure, manage, and troubleshoot Aruba wireless infrastructure through Aruba Central across multiple enterprise locations. Support Netskope Secure Web Gateway (SWG) policy management, including URL filtering, web access control, malicious traffic blocking, and compliance enforcement. Assist with Zero Trust Network Access (ZTNA) through Netskope Private Access (NPA), including AD group-based access management. Monitor Netskope alerts, user activity, and policy violations; troubleshoot user connectivity, application access, and web filtering issues.
System Engineer
Precision Informatic
Mar 2022 - Jul 2024
Managed Active Directory user accounts, password resets, and group memberships. Managed IT asset inventory, asset tracking, and lifecycle management. Provided desktop and remote support for hardware, software, printers, scanners, and end-user technical issues. Installed, configured, and supported Windows operating systems, including backup, restore, and preventive maintenance. Supported Microsoft 365 services including Outlook, OneDrive, SharePoint, and Microsoft Teams. Configured and monitored NVR systems and CCTV cameras, ensuring system availability and surveillance support.
Education
Bachelor of Science (B.Sc.) in Computer Science - Sri Muthukumaran Arts and Science College
- 2019 · Afghanistan
Certifications
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Skills (28)
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