Network Engineer Palo Alto

ADARSH TEAKAIGARI

860-***-**** ***********@*****.*** West Haven, CT LinkedIn GitHub

PROFESSIONAL SUMMARY

Cybersecurity and Network Engineer with 2+ years of hands-on experience securing hybrid infrastructures, automating network defenses, and performing vulnerability remediation across enterprise environments. Proven expertise in configuring AWS VPCs, Cisco and Palo Alto firewalls, and managing real-time threat detection using Splunk, ELK Stack, and Nessus. Demonstrated ability to streamline operations through automation using Python, Ansible, and SNMP, reducing incident response time and improving endpoint reliability. Skilled in VoIP optimization, SIEM rule tuning, and aligning systems with industry standards such as NIST 800-53, HIPAA, and CIS Benchmarks. Known for building resilient, scalable, and compliant infrastructures that support high availability and security across cloud and on-premise networks. TECHNICAL SKILLS

Programming & Scripting: Python, Bash, C, PowerShell Networking Protocols & Concepts: TCP/IP, UDP, DNS, DHCP, NAT, OSPF, BGP, VLAN, VPN, LAN/WAN, SNMP, QoS, ICMP Network Infrastructure & Devices: Cisco IOS, Cisco ASA, Cisco Nexus, Juniper, pfSense, Palo Alto, Fortinet, Ubiquiti VoIP & Communication Systems: Cisco Unified Communications Manager (CUCM), SIP, RTP, VoIP Gateways, QoS Configuration Security Tools & Technologies: Wireshark, Nmap, Nessus, Burp Suite, Metasploit, OWASP ZAP, Snort, Suricata, Fail2Ban Cloud & Virtualization Platforms: AWS (EC2, VPC, CloudWatch, IAM, Lambda), Azure, Google Cloud Platform (GCP), VMware ESXi, Hyper-V Automation & Configuration Management: Ansible, Terraform, Jenkins, Git, GitHub Actions Containerization & Orchestration: Docker, Kubernetes Monitoring & Logging: Prometheus, Grafana, ELK Stack, Splunk, SolarWinds, Nagios Operating Systems: Linux (Ubuntu, CentOS, RHEL), Windows Server, macOS Compliance & Frameworks: MITRE ATT&CK, NIST 800-53, ISO/IEC 27001, CIS Benchmarks, OWASP Top 10, HIPAA, Cyber Kill Chain PROFESSIONAL EXPERIENCE

Network & Infrastructure Support Engineer Intern May 2024 - Present Proventix, Abu Dhabi (Remote)

• Engineered and segmented VPC architectures with fine-grained routing and security groups in AWS, significantly minimizing lateral movement risk within isolated environments.

• Used Python with AWS Lambda to automate dynamic IP blacklisting, reducing manual firewall changes and improving incident containment speed by 40%.

• Analyzed packet-level traffic using Wireshark and applied updated ACL rules that blocked repeated scanning behavior, decreasing intrusion attempts by over one-third.

• Created customized alerting rules in ELK and Splunk, enabling faster root cause analysis and cutting anomaly response time by nearly 50% for application-level events.

• Standardized endpoint provisioning with Ansible playbooks, which reduced human errors during onboarding and improved system readiness across cloud and local machines.

• Scheduled regular firmware updates on embedded IoT devices in remote locations, stabilizing sensor outputs and lowering field device failures in production by 25%.

• Integrated SNMP monitors with Prometheus and Grafana dashboards, which empowered NOC teams to track device health in real time and resolve alerts more efficiently.

Cybersecurity & Network Security Analyst Jan 2021 - Mar 2023 AugurTalent Care, Hyderabad, India

• Deployed multilayered network security controls across hybrid environments, which reduced phishing-based intrusions by 50% through DNS filtering, IPS, and malware sandboxing.

• Identified over 20 exploitable flaws in web-facing applications using Burp Suite and OWASP ZAP, enabling development teams to implement fixes aligned with OWASP Top 10.

• Improved threat triage efficiency by implementing Splunk and ELK Stack dashboards for log ingestion and correlation, cutting analysis time from hours to minutes.

• Enforced CIS hardening benchmarks on Linux and Windows Server systems, minimizing configuration drift and helping the team pass quarterly HIPAA compliance audits.

• Prioritized and maintained VoIP network health using Cisco CallManager with QoS configurations, leading to a noticeable drop in packet loss and call latency during peak operations.

• Automated internal security processes with Python scripts for vulnerability scans, active port checks, and patch reporting, decreasing manual intervention by 30%.

• Led post-incident reviews for major security alerts, integrating findings into updated firewall rules and SIEM logic to enhance overall defense posture.

PROJECTS

Scalable Campus Network Infrastructure Design

• Designed a full-scale university campus network in Cisco Packet Tracer, implementing VLANs, Layer 3 routing, and ACLs to simulate secure traffic segmentation and access control.

• Configured DHCP, DNS, NAT, HSRP, and EIGRP to support IP conservation, redundancy, and zero-downtime failover in high- availability test environments.

Automated Network Monitoring System

• Developed a Python-based SNMP polling tool that tracked node health and triggered email alerts, reducing troubleshooting effort by 25% through real-time insights.

• Integrated with Grafana and Prometheus to build live performance dashboards, enabling enterprise-scale monitoring with root cause analytics and anomaly detection.

EDUCATION

Master of Science in Cybersecurity & Networks Aug 2023 - May 2025 University of New Haven - West Haven, CT

CERTIFICATIONS

• CompTIA Security+

• AWS Advanced Networking - Specialty

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