Heller Enterprise Networks
Features Is It For Me? Specs Setup Guide API Docs BETA Contact About

Stop guessing.
Start verifying.

NOTBOX:Network Operations Tool BOX

NOTBOX is an inline network appliance that captures and analyzes live traffic, simulates disruptive network conditions, monitors uplinks, and runs a full set of diagnostic tools - all from one browser tab.

No software to install, no command line, no production gear to touch.

NOTBOX network appliance, three-quarter angle
NOTBOX three-quarter view NOTBOX side view NOTBOX rear ports NOTBOX front panel
Wireless
WiFi 6 802.11ax
Wired
Gigabit Ethernet
Interface
Browser-based UI
Automation
HTTP API
No accounts
No subscription

From Fiber to Failing

Apply latency, jitter, loss, or bandwidth caps independently on upload and download - or pick from built-in presets.

01 Capabilities

Powerful Network Tools

Packet Capture & Analysis

Inline capture with built-in real-time analysis: hostnames, conversations, DNS lookups, IP addresses, TCP health, and a timeline view. Export to Wireshark or hand the summary to an AI agent.

Network Simulation

Add latency, jitter, packet loss, or bandwidth caps independently on upload and download. Industry-standard presets included for common scenarios.

Live Uplink Monitoring

Watch up to 4 destinations at once. Latency and packet-loss graphs with 30 days of historical data.

Bandwidth Monitoring

Real-time upload and download utilization, plus session totals across your wired and wireless test devices.

Diagnostic Toolkit

Ping, traceroute, DNS lookup, ARP scan, IP geolocation, public IP details, port connectivity tests, and a built-in speed test.

Port Mirror Mode

Plug in a laptop running Wireshark to view the data moving through the device in real time.

Browser-Based UI

Lives entirely on your local network - no accounts, no subscriptions, no installs required. Just open a browser.

HTTP API

Every feature is scriptable. Automate captures, simulations, and monitoring from CI/CD pipelines or your own tools.

See What's Really on the Wire

Hostnames, conversations, DNS queries, and TCP health - live, as traffic flows. Full pcap export when you need to dig deeper.

02 Interface

UI Examples

Impairment control

Impairment Control

Primary control screen for latency, packet loss, jitter, and bandwidth testing.

Bandwidth monitoring

Bandwidth Monitoring

Realtime upload and download utilization charting. For validating data consumption or throughput under impairment.

Uplink monitoring

Uplink Monitoring

Live latency and packet loss charts for validating WAN quality.

Network tools

Network Tools

ARP scanning, DNS lookups, public IP detection, quick ping, IP geolocation, and traceroute - all from one dashboard.

Speed test and port testing

Speed Test & Port Testing

On-device speed tests and batch port connectivity checks for validating throughput and service reachability.

Capture summary

Capture Summary

Detailed packet capture summary with DNS and TLS correlation, conversations, and protocol breakdowns.

03 Is it for you?

Sound Familiar?

Need to see what your software or hardware is doing on the network?

Building an app but unsure how it'll perform on spotty WiFi or slow mobile connections?

Need to capture and analyze traffic to troubleshoot an intermittent connectivity issue?

Want to measure exactly how much bandwidth your application or device actually consumes?

Trying to establish official network requirements for your product before deployment?

Supporting a remote site and need to validate their network speed or cloud connectivity?

Need ping, traceroute, DNS, ARP, and speed tests without the command line?

Then is for you.

04 Workflows

Built For Your Workflow

QA Testing

Verify application behavior under degraded networks. Capture traffic, validate retries, confirm offline handling - all before release.

Development

Inspect API calls, debug timeouts, test offline modes, validate retry logic, and reproduce flaky-network bugs from user reports.

Security Testing

Audit what apps send back to their servers, inspect IoT device traffic, or investigate unknown communications.

IT Support

Capture traffic from problem devices, diagnose user-reported issues, and verify cloud or VPN connectivity.

Network Engineering

Field diagnostics, traffic capture, uplink validation, and bandwidth verification - packed into one device that fits in a laptop bag.

Demo & Training

Reproduce customer network conditions for demos, or teach hands-on networking concepts with live impairment.

05 Specifications

Technical Specifications

Hardware

  • WiFi 6 (802.11ax)
  • Gigabit Ethernet
  • Compact form factor
  • Silent operation
  • 12V DC power

Toolkit

  • Packet capture & analysis
  • Live uplink monitoring
  • Bandwidth monitoring
  • Diagnostics & speed test
  • Port mirror mode

Network Simulation

  • Latency: 0-10,000 ms
  • Jitter: 0-1,000 ms
  • Packet Loss: 0-100%
  • Bandwidth: 1 Kbps - 1 Gbps
  • Independent up/down control

Connectivity

  • MGMT/LOCAL/UPLINK/DOWNLINK
  • Built-in WiFi access point
  • DHCP or static IP
  • Browser-based UI
  • No cloud, no accounts
06 Contact

Interested in NOTBOX?

Looking for a quote? Got a use case to share? Drop a line.

We'll get back to you within 1-2 business days.