Chandan Kumar

About Chandan Kumar

Certified Network Security Engineer with 4+ years of experience in designing, implementing, and operating secure enterprise network environments. I specialize in firewall administration, VPN solutions, SOC operations, and network infrastructure security across multi-vendor platforms including Fortinet, Palo Alto, Sophos, and Cisco.I have successfully delivered end-to-end security solutions for enterprise customers, from architecture design to deployment and ongoing operations. My expertise includes SSL/IPsec VPNs, firewall migrations, network segmentation (VLANs), intrusion prevention (IPS/IDS), and security monitoring.With strong hands-on experience in incident response and vulnerability management, I actively monitor security events, investigate threats, and implement remediation strategies. I follow global security frameworks such as NIST, ISO 27001, CERT-In, and NCIIPC to ensure compliance and risk reduction.Role DescriptionNetwork Security Engineer• Configuration and maintenance of Fortinet, Palo Alto & NetXGate firewalls• Daily monitoring of firewall logs and security events• Implementation of IPsec & SSL VPN• Troubleshooting complex network and security issues• Cisco router and switch configuration• VLAN creation, trunking, and inter-VLAN routing• Network design and failover testing• P2P link setup and troubleshooting• Wireless controller & AP configuration• Monitoring and analyzing security alerts• Investigating security incidents and breaches• Performing vulnerability assessments• Working with Managed Security Services (MSSP)• Implementing security controls based on NIST & ISO 27001• Maintaining compliance with CERT-In and IT Act Documentation & change management

Experience

1. Network Security Engineer

   Cnb Finwiz Private Limited

   Aug 2023 — Present · IN

   Network Security Engineer with strong hands-on experience in securing and managing enterprise network infrastructures across multi-vendor environments. Skilled in the configuration, administration, and maintenance of next-generation firewalls including Fortinet, Palo Alto, and Sophos, with a focus on policy management, NAT, threat prevention, and performance optimization.Experienced in daily monitoring of firewall logs and security events, identifying suspicious activities, and responding to security alerts in a timely manner. Proficient in implementing and supporting IPsec and SSL VPN solutions to ensure secure remote and site-to-site connectivity. Adept at troubleshooting complex network and security issues, minimizing downtime, and maintaining service availability.Possess a solid foundation in Cisco routing and switching, including VLAN creation, trunking, and inter-VLAN routing, enabling secure network segmentation and efficient traffic flow. Hands-on experience in network design, redundancy planning, and failover testing to support business continuity and high availability.Skilled in P2P link setup and troubleshooting, wireless controller and access point configuration, and continuous monitoring and analysis of security alerts. Actively involved in investigating security incidents and potential breaches, performing vulnerability assessments, and implementing remediation actions to strengthen overall security posture.

Education

• APJ Abdul Kalam Technological University

  Bachelor of Technology - BTech, Computer Science