Network Monitor

A web-based network monitoring platform built with ASP.NET Core and React. The MVP includes a responsive dashboard backed entirely by the live API.

Tech Stack

• ASP.NET Core Web API
• C#
• React
• TypeScript
• Vite

Current Capabilities

• SQLite persistence
• Device management and REST CRUD API
• Background ICMP monitoring
• Persistent ping check history and 24-hour monitoring summaries
• Responsive Overview, Devices, and Device Detail screens
• Realtime monitoring updates via SignalR with REST fallback
• Bounded IPv4 CIDR discovery with ICMP ping and reverse DNS
• Read-only SNMP v2c explorer for system information, interfaces, and custom GET/WALK queries
• Latency history charts and recent check results

Monitoring status counters are kept in process memory for the MVP and reset when the API restarts. SNMP community credentials are request-only and are not persisted or returned by the API.

Local Development

The API development profile runs at http://localhost:5107. The Vite app uses that address by default; copy frontend/network-monitor-ui/.env.example to .env only when you need to override it.

Start the backend:

dotnet run --project backend/NetworkMonitor.Api --launch-profile http

Start the frontend in another terminal:

cd frontend/network-monitor-ui
npm install
npm run dev

Open http://localhost:5173.

Planned Features

• Incident tracking
• Interface and bandwidth monitoring
• Network topology