Siva Ganesh
Chennai
Summary
Network security engineer with over ten years of experience in firewall management, load balancing, and cloud operations. Expertise in network troubleshooting, VPN configuration, and security policy implementation on platforms such as Cisco, Palo Alto, Fortinet, and F5. Proven ability in vulnerability assessment and threat management, ensuring strong asset protection and effective network design. Skilled in managing complex LAN, WAN, and SD-WAN infrastructures while providing technical security support for virtual networks and dedicated cloud services.
Overview
10
10
years of professional experience
1
1
Certification
Work History
Network Security Engineer
Deloitte
Chennai
06.2022 - Current
- Cloud Network security Engineer with B.E. degree. Having 9 years of professional experience on Firewall, Routing and Switching, Cloud Infra Management and Data center.
- Proficient in analyzing information system needs, evaluating end-user requirements, custom designing solutions, troubleshooting for complex information system management.
- Hand-on-Experience in both Firewall and Networking.
- Network Operations: Performing Network analysis, implementing changes in industry leading appliances, including Palo Alto, Fortigate and ASA firewalls.
- Implementing of Site-to-Site VPN and troubleshooting on VPN Connection issues on Palo Alto and checkpoint firewalls.
- Working on Palo Alto firewall, blocking/allowing Traffic, changing requests, adding ports, creating new policies.
- Worked on DLP, MacAfee IPS, IDS, VDI, and Syslog services.
- Good experience with F5 Big-IP load balancer.
- Monitoring Network performance, LAN, WAN, Wi-Fi controllers, Applications and system security.
- Experienced in Nexus 7k, 9k switches, configurations and live troubleshooting.
- Responsible for managing HPE Aruba SD-WAN devices (EC-XS 200889-008 Rev A), including device modeling, troubleshooting, and analysis using Silver Peak appliances.
- Responsible for server certificate renewals and adding back end servers to configure new virtual servers.
- Planned and executed IOS upgrades from version 15.1 to 17.1 on F5 load balancers.
- Responsible for configuring and deploying new virtual servers on A10 TH440 and TH30305 platforms.
- Provided operational support for Meraki access points and switches.
- Accountable for performing vulnerability assessments, troubleshooting and fixing bugs, and executing corrective actions to mitigate security threats across network devices.
- Providing technical security support and troubleshooting problems on Firewall, Routing, Switching and cloud infrastructure such as virtual networks, peering, dedicated cloud connectivity services.
- Identity management and access control, firewall management, auditing and monitoring, security incident and event management, data protection, user and administrator account management, SSO, conditional access controls.
- Proactively monitor & remediate security incoming alerts/vulnerabilities.
- Basic understanding of CI/CD pipeline, automation tools like Ansible.
- Basic knowledge of scripting languages such as python.
MS Network and Security Engineer
NTT Pvt Ltd
Bangalore
05.2021 - 06.2022
- Experience working with Palo Alto (Panorama 9.1 V and Fortinet firewalls, including implementing IPSEC VPN tunnels, creating NAT rules, configuring security policies, and setting up routes.
- Skilled in configuring and troubleshooting Nexus 7k and 9k switches in live environments.
- Activities and use the Meraki tool to monitor router, core switch, and access point status, along with prioritising cable checks as needed.
- Knowledge on Meraki tools involves device migration, configuration, and troubleshooting.
- Hands-on experience with Extreme Networks, where I have created VLANs, set up MAC binding, configured ELRP, SNMP, and Radius, as well as performed core switch backups and restores.
- Responsibility to handle audit requests and provided detailed responses based on root cause analysis (RCA).
- Use TACACS+ and Radius protocols for user authentication, authorization, and accounting.
- Familiar with configuring IP phones and Polycom phones.
- Responsibility to maintain.
Network Security Engineer
Trimax IT Infrastructure
Goa
06.2017 - 06.2021
- Worked with automated tool like, fetch, zipper, HPNA and ticketing tool ServiceNow.
- Hands on experience in Extreme networks, creating VLANs, MAC binding, ELRP, SNMP configurations and Radius configurations.
- Core Switch Backup and Restores.
- Using TACACS+ and Radius for User Authentication, Authorization and Accounting.
- Good knowledge on routing protocols like RIP, OSPF, EIGRP and BGP.
- Remote administration and troubleshooting of windows and Linux systems.
- Hands on experience in NAC manager.
- Exinda, Open NMS, AVAYA Communication manager (VoIP).
- Maintain documents of work performed during the new activity.
- Experience in implementing firewall rules and troubleshooting using Palo Alto and Fortinet technologies, along with hands-on expertise in Zscaler for IP and URL whitelisting, as well as SSL management.
- Responsibilities include performing router configuration data backups and providing remote connectivity support through NetMeeting, DameWare, RDP, WebEx, phone, and email.
- Proficient in incident resolution using ServiceNow, handling INCIDENT, RTASK, CHANGE, and PROBLEM tickets, and analyzing system/application logs to identify and resolve technical issues.
- Worked with monitoring tools like Centreon, Zabbix, and SolarWinds to assess system performance metrics including storage capacity, CPU usage, and network bandwidth utilization.
Network Engineer
Rayone Group of Company
Goa
06.2016 - 05.2017
- Implemented and maintained network infrastructures including LAN, WAN, intranet, and extranet, gaining strong troubleshooting experience with routers and switches.
- Supported application development teams with network assistance during daily operations and software upgrades, facilitating seamless integration and performance.
- With hands-on experience using CA Spectrum for control monitoring, I actively analyse system and application logs to identify root causes and deliver effective resolutions.
- My role has involved developing and executing test plans to evaluate infrastructure and system performance, as well as performing detailed network modelling and analysis.
- Managed technical support tickets, including incident, RTASK, change, and problem categories, through ServiceNow to ensure timely and accurate resolution.
Education
B.E. - Electrical and Electronics Engineering
Anna University
Villupuram, TN01-2016
Skills
- Firewall
- Load Balancing
- Cloud Operations
- VPC Management
- VPN Configuration
- TCP/IP
- DNS
- DHCP
- AWS Cloud
- IPSEC VPN
- SSL VPN
- SSL/TLS
- Cisco Routing and Switching
- Extreme Routing and Switching
- Wireless
- Cisco IP Phone
- Palo Alto
- Fortinet
- F5 Load balancer
- A10 Load Balancer
- Firewall management
- Network troubleshooting
- VPN configuration
- Vulnerability assessment
- Security policy implementation
- Root cause analysis
- Project Management
- Asset protection
- Network design
- Threat management
- IDS/IPS
- Network Operations
- Network Projects
- Zscaler
- SD-WAN
- ISE
- Meraki Wireless
- Extreme Wireless
- Cisco Wireless
Certification
- CCNP
- Palo Alto
- AWS
- Python
- SD-WAN
Accomplishments
- Honored with three Spot awards and recognition from Deloitte for leading the Spectrum tool initiative, executing ACS to ISE migration, and maintaining support for high-priority cases.
- Achieved the Peak Seasonal Award on two occasions from NTT GDC India for ensuring smooth support operations during essential business hours.
Languages Known
English
Hindi
Tamil
Timeline
Network Security Engineer
Deloitte
06.2022 - Current
MS Network and Security Engineer
NTT Pvt Ltd
05.2021 - 06.2022
Network Security Engineer
Trimax IT Infrastructure
06.2017 - 06.2021
Network Engineer
Rayone Group of Company
06.2016 - 05.2017
B.E. - Electrical and Electronics Engineering
Anna University