为什么值得关注

它集成了多种监控协议（ICMP、SNMP v2c），通过 SignalR 实现实时更新，支持 CIDR 设备发现，并使用现代 React 前端，全部整合在一个开源平台中。

适合谁使用

小型网络管理员
需要监控基础设施的 DevOps 团队
开发全栈监控应用的开发者
需要轻量级网络发现工具的 IT 专业人员

典型使用场景

通过定期 ICMP Ping 监控设备可用性
使用 CIDR 扫描发现子网中的活跃设备
通过只读 SNMP 探索系统信息和接口
查看历史 Ping 延迟图表和最近的检查结果

项目优势

通过 SignalR 实现实时仪表盘更新，并具备 REST 回退机制
后台 ICMP 监控，带有持久化历史和 24 小时摘要
支持有界 IPv4 CIDR 发现，包含反向 DNS 查询
只读 SNMP v2c 浏览器，支持自定义 GET 和 WALK 查询

使用前须知

监控计数器存储在进程内存中，API 重启后重置
SNMP 社区凭据仅请求时使用，API 不持久化
项目处于 MVP 阶段，计划中的事件跟踪和带宽监控等功能尚未实现

README 快速开始

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

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