Deepkumar Patel

• Administer and secure 100+ enterprise firewalls (Sophos, SonicWall, WatchGuard, Fortinet), including rule creation, NAT policies, VPNs, and segmentation.
• Designed and implemented secure network segmentation within data centers, reducing lateral threat movement.
• Built and maintained VPN solutions (IPSec, SSL) for client-to-site, site-to-site, and cloud interconnectivity.
• Automated firewall and network infrastructure using Python and Ansible, reducing manual effort by 30-40%.
• Performed Level 1 server administration: provisioning/deploying servers in VMware ESXi and Nutanix, OS installations, patching, troubleshooting, and monitoring.

• Designed network diagrams and defined IP schema with VLANs.
• Configured Layer 3 switches for inter-VLAN routing; deployed over 200 Layer 2 switches (Cisco, Dell, Aruba).
• Implemented wireless controllers and configured over 300 controller-based APs.
• Installed and configured SIP servers with over 100 IP phones, analyzing SIP packets.
• Built out-of-band Wazuh SIEM servers, deployed EDR agents, and integrated AV server logs.
• Configured Seqrite UTM for WAN security.
• Troubleshot enterprise network issues using Wireshark, with Dell OEM support.
• Detected and mitigated Layer 2 attacks (DHCP snooping, STP looping).

Project: Automatic Backup System Using Python Script.

• Built an automated backup system with Paramiko, ipaddress, time, and OS libraries.
• Supported single-host, multiple-host, and all-device backups.
• Executed automated commands across selected devices successfully.

• Conducted penetration testing on enterprise-like environments, focusing on firewall and perimeter defense evaluation.
• Performed web application security assessments, identifying vulnerabilities, and proposing mitigation strategies.
• Executed attacks: dictionary attacks, XSS, SQLi, CSRF, SSRF, command injection, clickjacking, brute force, phishing, and file upload exploits.
• Developed a comprehensive OWASP Top 10 report, documenting attack methodology and recommended controls.