Vignesh Somasundaram

Managed Anti-DDoS solutions (Arbor, Radware, Nokia DeepField Defender) and analyzed logs using Splunk for 20+ Vodafone local markets and 200+ enterprise customers.
Configured and onboarded new customers for DDoS protection, securing services like Web, FTP, Mail, VPN, and DNS.
Monitored and mitigated DDoS attacks using Arbor Sightline SP and Radware Apsolute Vision, applying effective countermeasures.
Captured and analyzed attack traffic logs using Splunk and Wireshark for deep threat analysis.
Identified and responded to different types of DDoS attacks, ensuring effective remediation.
Worked with cross-functional teams to address vulnerabilities and strengthen security.
Handled customer escalations and queries, providing support for unplanned security incidents.
Performed regular security health checks and audits, optimizing customer traffic thresholds to minimize false positives.
Developed SOPs and automation use cases, updating security incident response documentation.
Acted as the single point of contact (SPOC) since 2020 for platform issues, working with TAC teams on troubleshooting, firmware upgrades, and RMA processes.
Led cross-skilling initiatives and conducted project training for new team members.
Managed and mentored the team, ensuring smooth project execution and knowledge transfer.

Deploying and supporting security technologies like FortiGate firewalls and Zscaler proxy solutions.
Configuring firewalls from scratch, onboarding clients, and providing ongoing support.
Handling device migrations for Vodafone’s internal networks worldwide, ensuring smooth transitions with pre- and post-checks.
Providing network security solutions to multiple clients, ensuring secure internet access and data protection.
Setting up remote access VPNs (IPsec and SSL) for secure client connections.
Implementing Zscaler proxy solutions (ZIA for on-prem users and ZPA for remote users), managing whitelisting/blacklisting, PAC files, and troubleshooting access issues.
Establishing secure connectivity to Zscaler using IPsec tunnels.
Supporting cloud connectivity for clients by configuring, testing, and troubleshooting firewall settings for Microsoft Azure and AWS public peering.
Performing firewall upgrades and hotfix installations during maintenance windows to enhance security and performance.
Working with vendor support teams to resolve complex technical issues when needed.
Managing faulty device replacements (RMA) and ensuring proper functionality after installation.
Supporting the Anti-DDoS team using Arbor devices, analyzing attacks, configuring baselines, and managing backups.
Handling security alerts, mitigating threats, and configuring new customer setups.
Mentoring new hires and managing Level 2 technical escalations.

Managing firewall rules and security policies to control network traffic and protect systems.
Securing documents by restricting device access and using encryption.
Upgrading firewalls and security software to keep systems updated and protected.
Troubleshooting issues with firewalls, antivirus software (McAfee, Symantec, Trend Micro, Sophos), and networks daily.
Migrating firewalls from one vendor to another (e.g., Juniper, Palo Alto, Check Point to FortiGate).
Setting up VPNs for secure remote access and site-to-site connections.
Enforcing antivirus security policies to prevent malware and cyber threats.
Analyzing malware using tools like vSphere, VirusTotal, and Trend Micro DDAN.
Attending training on the latest security and backup technologies.
Managing and troubleshooting network security for 13 locations independently over 9 months.

Provided technical support and security troubleshooting for enterprise network and system issues.

Assisted in IT infrastructure management, system patching, and endpoint security enforcement.

Collaborated with IT teams to resolve network performance issues, security concerns, and operational disruptions.