VC
Vibhav Chennamadhava

VIBHAV CHENNAMADHAVA

CCNA-Certified Cybersecurity • Network Infrastructure • Cloud Security

CCNA-certified cybersecurity and infrastructure professional building secure enterprise networks, SOC detection labs, and cloud/DevSecOps automation. Focused on routing/switching, segmentation, SIEM triage, vulnerability management, IAM, and resilient operations for Security Engineer, SOC Analyst, and Network Security roles.

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CCNA
Certified Network Associate
2+ yrs
Enterprise IT Experience
Security
SOC • Network • Cloud

Experience

2020–2021

Network & Cybersecurity Fundamentals (Netcenter)

Built a foundation in networking, Linux, troubleshooting, and security concepts through Netcenter coursework and hands-on lab practice.

2021–2023

DevOps Support Analyst (Accenture)

Supported enterprise CI/CD and operations, assisted incident investigations, tracked vulnerability remediation, handled IAM access support, and automated reporting workflows.

2024–2025

MS in Cybersecurity (University of North Texas)

Completed SOC-style labs, vulnerability assessment labs with Nmap/Nessus/ZAP, log analysis, network security coursework, and security documentation/writeups.

Feb–May 2026

Cyber Security Analyst (Community Dreams Foundation)

Supported community-focused technology initiatives with practical troubleshooting, documentation, and user-centered service delivery.

2026–Present

Web Developer / Systems Administrator, Intern (CALEC)

Supporting infrastructure, DevOps, and security operations for a nonprofit’s web platforms — Linux server administration, Docker-based infrastructure, DNS and email troubleshooting, and security incident response.

Featured

Projects & Labs

Network infrastructure and cybersecurity labs prioritized around CCNA enterprise design, SOC detection, endpoint telemetry, email security, and practical reporting.

C

CCNA Enterprise Campus Mega Lab

Routing, Switching & Network Security

Designed and documented a CCNA-scale enterprise campus network to demonstrate secure segmentation, resilient routing, and operational troubleshooting across realistic infrastructure tiers.

What I built

Multi-VLAN campus topology with core/distribution/access layers, inter-VLAN routing, trunking, EtherChannel, DHCP, ACL enforcement, NAT, static and dynamic routing, and verification runbooks.

Tech stack
  • Cisco IOS
  • Packet Tracer
  • VLANs
  • OSPF
  • ACLs
  • NAT
  • STP
  • EtherChannel
Security focus

Network segmentation, least-privilege access control, routing resilience, and evidence-based troubleshooting for enterprise infrastructure.

⭐ 0
🍴 0
Lab Repo
M

Microsoft Sentinel Training Lab

SOC Detection Engineering

Built a Sentinel-based SOC lab to practice detection rules, incident triage, and investigation workflows in Microsoft security tooling.

What I built

Configured Microsoft Sentinel workspace, ingested telemetry, wrote analytics rules, and validated alert-to-incident investigation flows.

Tech stack
  • Microsoft Sentinel
  • KQL
  • Log Analytics
  • Incident Response
Security focus

Cloud-native threat detection, alert tuning, and SOC investigation playbooks.

⭐ 0
🍴 0
Project Repo
W

Wazuh SIEM/EDR POC

Detection & Triage

Modeled triage workflows for endpoint telemetry to practice alert validation, evidence collection, and escalation decisions.

What I built

Agent telemetry collection, rule-based alerting, IOC-driven investigation notes, and analyst-style validation steps.

Tech stack
  • Wazuh
  • SIEM
  • EDR
  • Linux
  • Log Analysis
Security focus

Alert fidelity, endpoint log correlation, and incident response readiness.

⭐ 0
🍴 0
Project Repo
S

SMTP Mail Server Lab

Email Security

Deployed a production-like mail server with authentication and DNS hardening to validate secure delivery and sender reputation.

What I built

iRedMail on Ubuntu with TLS via Let’s Encrypt, DNS records, rDNS, and SPF/DKIM/DMARC alignment.

Tech stack
  • Ubuntu
  • iRedMail
  • TLS
  • DNS
  • SPF/DKIM/DMARC
Security focus

Email spoofing resistance, transport security, and domain reputation hygiene.

⭐ 0
🍴 0
Lab Repo
H

HTB WriteUps

Offensive Security

Documented end-to-end attack paths with evidence, impact, and mitigations to mirror SOC-ready reporting.

What I built

Repeatable writeup format: recon → exploitation → privilege escalation → validation → remediation notes.

Tech stack
  • Linux
  • Recon
  • Exploitation
  • Reporting
Security focus

Threat-driven reporting, root-cause analysis, and practical mitigations for defenders.

⭐ 0
🍴 0
Writeups HTB Profile
P

Password Manager

Python • Application Security

Built an offline desktop vault with strong cryptography and safer clipboard handling to reduce password leakage risk.

What I built

AES-256-GCM encrypted vault, master-password authentication, and auto-clear clipboard flow for sensitive fields.

Tech stack
  • Python
  • Cryptography
  • AES-256-GCM
  • Secure Storage
Security focus

Data-at-rest encryption, secret handling hygiene, and reducing credential exposure on endpoints.

⭐ 0
🍴 0
Repository

Certifications

Cisco Certified Network Associate (CCNA)
Certified • Enterprise networking, routing/switching, IP services, security fundamentals, and automation
CompTIA Security+ (SY0-701)
Issued Jul 15, 2025 • Expires Jul 15, 2028
ISC2 Certified in Cybersecurity (CC)
Issued Nov 13, 2025
Google (Coursera) – Foundations of Cybersecurity
Completed Mar 1, 2024
Microsoft Certified: Security Operations Analyst Associate (SC-200)
Issued Jul 8, 2026
Download current resume

Infrastructure & DevSecOps Tooling

Network Infrastructure

  • Cisco IOS
  • VLANs
  • STP
  • EtherChannel
  • OSPF
  • ACLs
  • NAT
  • DHCP

Version Control & Collaboration

  • Git
  • GitHub
  • GitLab
  • Bitbucket

CI/CD

  • Jenkins
  • GitHub Actions
  • GitLab CI
  • Azure DevOps
  • Bamboo

Infrastructure as Code

  • Terraform
  • AWS CloudFormation
  • Ansible
  • Puppet
  • Chef

Containers & Orchestration

  • Docker
  • Docker Compose
  • Kubernetes (EKS, AKS)
  • Helm
  • OpenShift
  • Nomad

Monitoring & Logging

  • Prometheus
  • Grafana
  • Datadog
  • ELK Stack
  • Splunk

Security & Quality

  • HashiCorp Vault
  • SonarQube
  • Trivy
  • Aqua Security
  • Secure configuration baselines

Cybersecurity & Detection Tools

SIEM / Monitoring

  • Microsoft Sentinel
  • Wazuh
  • Splunk
  • IBM QRadar
  • AlienVault

Vulnerability Management

  • Nessus
  • Nmap
  • OpenVAS
  • Qualys
  • Rapid7
  • Nexpose

Network Security

  • Wireshark
  • Snort
  • Firewalls (Cisco ASA, Fortinet)
  • VPN
  • IDS/IPS

Cloud & IAM Security

  • Azure fundamentals
  • AWS fundamentals
  • IAM reviews
  • Least privilege
  • Zero Trust
  • M365 Admin Center
  • Exchange Admin Center
  • RBAC
  • access lifecycle management

Penetration Testing

  • Kali Linux
  • Metasploit
  • OWASP ZAP
  • Nikto

Endpoint Security

  • CrowdStrike
  • Symantec
  • McAfee
  • OSSEC

About

CCNA-certified cybersecurity and infrastructure professional focused on secure enterprise networks, SOC detection, vulnerability management, IAM, and DevSecOps automation. I connect routing/switching fundamentals with practical security operations so infrastructure is resilient, observable, and defensible.

"Secure networks you can operate, monitor, and prove."

I focus on CCNA-grounded network infrastructure, SIEM detection, vulnerability remediation, cloud/IAM hardening, and DevSecOps automation. My labs emphasize documented designs, verification steps, and clear evidence that a control or workflow works as intended.

Skill Keywords

CCNAEnterprise Campus NetworkingNetwork SecurityIncident ResponseRisk ManagementThreat IntelligenceIdentity & Access Management (IAM)Cloud Security (AWS, Azure)Vulnerability ManagementRisk AssessmentCompliance (GDPR, HIPAA)MITRE ATT&CKZero TrustNISTSASEVLANsOSPFACLsThreat HuntingDigital ForensicsData Loss Prevention (DLP)PythonBash/Shell ScriptingPowerShellSQLCryptography

CTF Profiles

Hands-on offensive practice used to strengthen defensive reporting, root-cause analysis, and mitigation recommendations.

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