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NETWATCH v0.1.0-alpha.1 — Local Network Intelligence & Device Inventory

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@alwkala alwkala released this 06 Oct 03:04
· 20 commits to main since this release
v0.1.0-alpha.1
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NETWATCH v0.1.0-alpha.1 — Developer Preview

"Know Every Device on Your LAN. Without the Cloud Watching."
Local Network Intelligence & Device Inventory. 100% offline, zero cloud, zero telemetry.

🧠 Beyond Ephemeral Scanning: Asset Intelligence

Traditional network scanners (like Advanced IP Scanner or Angry IP Scanner) are momentary utilities: they perform a fire-and-forget sweep, render a transient table, and discard all state when closed. They have no memory, no temporal awareness, and cannot distinguish a brand new intruder from a stable home workstation.

In NETWATCH, scanning is only the sensor (ingestion mechanism). The true product is the Local Asset Ledger & Reconciliation Engine:

Capability Ephemeral Scanners NETWATCH (Local Network Intelligence)
Core Question "What is responding right now?" "What was here? What changed? Who joined, left, or drifted IP? When?"
State & Memory Ephemeral (wiped on app exit) Persistent local SQLite database across reboots
Asset Lifecycle No concept of first seen / history Dedicated timeline tracking joins, departures, and IP migrations
Flap Resistance Single missed ping triggers disconnect Threshold reconciliation (misses = 2) prevents sleep-mode false alerts
New Device Detection Undifferentiated list row Explicit isNew status badge until acknowledged by user
Data Privacy Cloud uploads / external API calls common 100% Sovereign: Air-gapped IEEE OUI lookup, zero external requests, zero telemetry

🚀 Key Capabilities & Architectural Invariants

  • ⚡ Super Fast Subnet Discovery: Active, unprivileged parallel ARP and ICMP sweeps across private IPv4 LANs with concurrent TCP fallback.
  • 🏷️ Local Hardware Fingerprinting: Local MAC vendor classification via embedded IEEE OUI database (internal/oui/ieee-oui.txt) with zero external network egress.
  • ⏱️ Flap-Resistant Reconciliation: Smart status tracking marks devices offline only after two consecutive missed sweeps (misses = 2), preventing false disconnect alerts for sleeping Wi-Fi devices.
  • 🔌 Integrated Diagnostics: Native user-mode Ping with latency measurement, TCP port probing, and RFC-compliant Wake-on-LAN (WoL).
  • 📜 Historical Network Timeline: Persistent SQLite local ledger tracking joins, leaves, and IP address migrations.
  • 🛡️ Triple-Layer Loopback Security: Local API binds exclusively to 127.0.0.1:<random-port> guarded by an ephemeral 192-bit Bearer token, anti-DNS rebinding Host validation, and cross-site Origin isolation.
  • ⚙️ Real Settings & Background Auto-Scan: Background auto-scan engine worker executing periodic network sweeps (1m, 5m, 15m, 1h) with dynamic interval reconfiguration.
  • 🗄️ Database Inspection & Maintenance: Live SQLite metrics panel, VACUUM defragmentation compaction, and PRAGMA integrity validation.

📦 Downloads & Verification

Asset Platform Description
netwatch.exe Windows 10/11 x64 Standalone portable executable (embedded React 19 UI & SQLite engine)
  • Architecture: AMD64 (x64)
  • License: Dual-licensed under MIT and Apache 2.0
Assets 3
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