THE WORK / SIX CASE STUDIES

Built, tested, and still building.

Each project in context: the problem, my contribution, the technology, and where the work stands.

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01 / Private · In development

Project case study

Sentinel Graph AI

Security relationships in one investigative view.

Security graph concept diagram · visual explanation, not a product screenshot.

Context

Security analysts often move between disconnected inventories and findings. I am building an application that makes the relationships among assets, vulnerabilities, findings, and potential attack paths easier to follow.

Stack & tools

FastAPI · PostgreSQL · Alembic · React · TypeScript

Product concept and application architecture

Developing a FastAPI backend with PostgreSQL models and Alembic migrations for structured security records.
Building a React/TypeScript application shell and views for assets, vulnerabilities, findings, attack paths, assessments, and remediation.
Designing graph-oriented navigation to show context around a finding and support clearer investigation.

Current result & status

Private build in progress. The models and interface structure exist in development; complete AI-assisted analysis and end-to-end workflows have not been released.

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02 / Public lab · Iterating

Project case study

AEGIS Enterprise Cyber Range

A small enterprise, built for hands-on security testing.

Isolated cyber range concept diagram · visual explanation, not a product screenshot.

Context

An isolated VirtualBox lab for practicing how an organization manages user accounts, computers, and security controls. The Windows Server domain and a joined workstation are in place; monitoring integrations are planned.

Stack & tools

VirtualBox · Windows Server 2025 · Active Directory · Group Policy · Windows workstation · planned OPNsense, Splunk, and Wazuh

Enterprise architecture and detection work

Configured Active Directory, DNS, organizational units, groups, and workstation Group Policy in a Windows Server domain.
Joined a Windows workstation to the domain and tested identity and policy management.
Documenting the next steps for firewall routing, telemetry collection, and security monitoring with OPNsense, Splunk, and Wazuh.
Recording configuration choices, troubleshooting notes, and test results as the lab develops.

Current result & status

The domain and workstation are configured. Firewall, telemetry, and detection integrations remain future stages of this in-progress lab.

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03 / Public simulation · Completed

Project case study

ARES-1 Mars Colony Cyber Defense

Protecting critical systems through segmentation.

Mars colony network segmentation concept diagram · visual explanation, not a product screenshot.

Context

This Cisco Packet Tracer exercise treats a simulated oxygen controller as critical infrastructure. It tests whether ordinary rover or research traffic can reach that system if a device is compromised.

Stack & tools

Cisco Packet Tracer · VLANs · ACLs · Port security

Network controls and test scenarios

Separated rover, research, telemetry, control, security, and life-support systems into six main VLANs.
Configured router-on-a-stick inter-VLAN routing, extended ACLs, sticky MAC switch security, and VLAN 999 for unused ports.
Tested a compromised rover attempting to reach the oxygen controller and a rogue device connecting to a protected switch port.
Verified that these unauthorized paths were blocked while intended communication remained available.

ARES-1 Packet Tracer topology from the public repository.

Current result & status

Both blocked-access scenarios are documented in the simulated topology. This is a Packet Tracer validation, not a production deployment.

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04 / Public code · Completed

Project case study

Python Network Security Toolkit

Small defensive checks in one command line tool.

Network security toolkit concept diagram · visual explanation, not a product screenshot.

Context

I built a modular Python toolkit to make routine network and security inspection repeatable, while learning how to organize utilities as testable modules.

Stack & tools

Python · sockets · HTTP · pytest

Modules and engineering choices

Implemented TCP port scanning and banner grabbing for basic service discovery.
Added HTTP response-header analysis and a password-hash auditing module.
Parsed login logs to flag suspicious activity and assembled the checks in an interactive CLI.
Added automated pytest coverage for core behavior.

From the original portfolio

Developed a modular Python-based cybersecurity toolkit for network analysis, security auditing, and automation through an interactive command-line interface.

Port Scanner for discovering open TCP ports.
Service Banner Grabber for identifying active services.
HTTP Security Header Analyzer with security recommendations.
Password Hash Auditor supporting multiple hash algorithms.
Log File Analyzer for detecting suspicious login activities.
Interactive Command-Line Interface (CLI).
Automated Unit Testing using PyTest.

Tools noted there: Python, Socket, Requests, PyTest, Cybersecurity, CLI.

Current result & status

The code and tests are public. Use the inspection modules only on systems you own or have permission to assess.

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05 / Public simulation · Completed

Project case study

Shree Yasam Campus Network

Two campuses with a clear path between departments.

Two campus network concept diagram · visual explanation, not a product screenshot.

Context

A Cisco Packet Tracer network design for a school with multiple departments, separated traffic, shared services, and communication between campuses.

Stack & tools

Cisco Packet Tracer · VLANs · Layer 3 · RIP v2 · DHCP

Topology and services

Segmented departments and labs into separate VLANs and configured inter-VLAN routing through Layer 3 switches.
Used RIP v2 between the two campus networks and static routes toward simulated external connectivity.
Configured DHCP and simulated internal web and FTP services plus external email access.
Applied hierarchical design and switch security settings to make the topology easier to manage and troubleshoot.

Two-campus overview from the public repository.

From the original portfolio

Designed and implemented a scalable enterprise network connecting two campuses, providing secure communication, VLAN segmentation, and centralized network services.

Designed an enterprise network supporting 8+ departments.
Configured VLAN segmentation and Inter-VLAN Routing using Layer 3 switches.
Implemented RIP v2 dynamic routing between campuses.
Configured DHCP for automatic IP address allocation.
Implemented static routing for secure cloud server connectivity.
Applied switch security best practices and hierarchical network design.

Tools noted there: Cisco Packet Tracer, Networking, VLAN, Layer 3, RIP v2, DHCP.

Current result & status

The public repository contains the topology and design material. It is a simulated campus network.

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06 / Public prototype · Completed prototype

Project case study

NetVault

A visual home for network architecture ideas.

Network design workspace concept diagram · visual explanation, not a product screenshot.

Context

NetVault is a completed initial React and Vite prototype for presenting network designs. The current repository represents that first deliverable; more advanced design and collaboration features are future ideas.

Stack & tools

React · Vite · interface exploration

Current work and next questions

Set up the React/Vite application foundation for an interface-oriented network architecture concept.
Exploring how topology views and project organization could make a network design easier to inspect and share.

Current result & status

Early-stage prototype. The public README is still a starter template, and the planned features should not be read as delivered.

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