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</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--active md-nav__item--section md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_3" checked>
<label class="md-nav__link" for="__nav_3" id="__nav_3_label" tabindex="">
<span class="md-ellipsis">
Setup
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_3_label" aria-expanded="true">
<label class="md-nav__title" for="__nav_3">
<span class="md-nav__icon md-icon"></span>
Setup
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--section md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_3_1" >
<label class="md-nav__link" for="__nav_3_1" id="__nav_3_1_label" tabindex="">
<span class="md-ellipsis">
Getting started
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_3_1_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_3_1">
<span class="md-nav__icon md-icon"></span>
Getting started
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../SUBNETS/" class="md-nav__link">
<span class="md-ellipsis">
Subnets
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PLUGINS/" class="md-nav__link">
<span class="md-ellipsis">
Enable Plugins
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PIHOLE_GUIDE/" class="md-nav__link">
<span class="md-ellipsis">
Pi-hole Guide
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../HOME_ASSISTANT/" class="md-nav__link">
<span class="md-ellipsis">
Home Assistant
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../SMTP/" class="md-nav__link">
<span class="md-ellipsis">
Emails
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../BACKUPS/" class="md-nav__link">
<span class="md-ellipsis">
Backups
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../SECURITY_FEATURES/" class="md-nav__link">
<span class="md-ellipsis">
Security Features
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../SECURITY/" class="md-nav__link">
<span class="md-ellipsis">
Security Considerations
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</li>
</ul>
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<li class="md-nav__item md-nav__item--active md-nav__item--section md-nav__item--nested">
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<label class="md-nav__link" for="__nav_3_2" id="__nav_3_2_label" tabindex="">
<span class="md-ellipsis">
Advanced guides
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_3_2_label" aria-expanded="true">
<label class="md-nav__title" for="__nav_3_2">
<span class="md-nav__icon md-icon"></span>
Advanced guides
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--active">
<input class="md-nav__toggle md-toggle" type="checkbox" id="__toc">
<label class="md-nav__link md-nav__link--active" for="__toc">
<span class="md-ellipsis">
Remote Networks
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<a href="./" class="md-nav__link md-nav__link--active">
<span class="md-ellipsis">
Remote Networks
</span>
</a>
<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
<label class="md-nav__title" for="__toc">
<span class="md-nav__icon md-icon"></span>
Table of contents
</label>
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
<li class="md-nav__item">
<a href="#complex-use-cases" class="md-nav__link">
<span class="md-ellipsis">
Complex Use Cases
</span>
</a>
<nav class="md-nav" aria-label="Complex Use Cases">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#wi-fi-extenders" class="md-nav__link">
<span class="md-ellipsis">
Wi-Fi Extenders
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#vpns" class="md-nav__link">
<span class="md-ellipsis">
VPNs
</span>
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../NOTIFICATIONS/" class="md-nav__link">
<span class="md-ellipsis">
Notifications Guide
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PUID_PGID_SECURITY/" class="md-nav__link">
<span class="md-ellipsis">
Custom PUID/GUID
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../NAME_RESOLUTION/" class="md-nav__link">
<span class="md-ellipsis">
Name Resolution
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../AUTHELIA/" class="md-nav__link">
<span class="md-ellipsis">
Authelia
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PERFORMANCE/" class="md-nav__link">
<span class="md-ellipsis">
Performance
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../REVERSE_DNS/" class="md-nav__link">
<span class="md-ellipsis">
Reverse DNS
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../REVERSE_PROXY/" class="md-nav__link">
<span class="md-ellipsis">
Reverse Proxy
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../WEBHOOK_N8N/" class="md-nav__link">
<span class="md-ellipsis">
Webhooks (n8n)
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../WORKFLOWS/" class="md-nav__link">
<span class="md-ellipsis">
Workflows
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../WORKFLOW_EXAMPLES/" class="md-nav__link">
<span class="md-ellipsis">
Workflow Examples
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DOCKER_SWARM/" class="md-nav__link">
<span class="md-ellipsis">
Docker Swarm
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--section md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_3_3" >
<label class="md-nav__link" for="__nav_3_3" id="__nav_3_3_label" tabindex="">
<span class="md-ellipsis">
Best practice advisories
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_3_3_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_3_3">
<span class="md-nav__icon md-icon"></span>
Best practice advisories
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../ADVISORY_EYES_ON_GLASS/" class="md-nav__link">
<span class="md-ellipsis">
Eyes on glass
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../ADVISORY_MULTI_NETWORK/" class="md-nav__link">
<span class="md-ellipsis">
Multi-network monitoring
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--section md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_3_4" >
<label class="md-nav__link" for="__nav_3_4" id="__nav_3_4_label" tabindex="">
<span class="md-ellipsis">
Help
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_3_4_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_3_4">
<span class="md-nav__icon md-icon"></span>
Help
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../COMMON_ISSUES/" class="md-nav__link">
<span class="md-ellipsis">
Common issues
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../RANDOM_MAC/" class="md-nav__link">
<span class="md-ellipsis">
Random MAC
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../FIX_OFFLINE_DETECTION/" class="md-nav__link">
<span class="md-ellipsis">
Incorrect Offline Detection
</span>
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4" >
<label class="md-nav__link" for="__nav_4" id="__nav_4_label" tabindex="0">
<span class="md-ellipsis">
Device guides
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_4_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4">
<span class="md-nav__icon md-icon"></span>
Device guides
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4_1" >
<label class="md-nav__link" for="__nav_4_1" id="__nav_4_1_label" tabindex="0">
<span class="md-ellipsis">
Editing Devices
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_4_1_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4_1">
<span class="md-nav__icon md-icon"></span>
Editing Devices
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../DEVICE_MANAGEMENT/" class="md-nav__link">
<span class="md-ellipsis">
Management
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEVICES_BULK_EDITING/" class="md-nav__link">
<span class="md-ellipsis">
Bulk Editing
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../CUSTOM_PROPERTIES/" class="md-nav__link">
<span class="md-ellipsis">
Custom Properties
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEVICE_DISPLAY_SETTINGS/" class="md-nav__link">
<span class="md-ellipsis">
Device Display Settings
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../SESSION_INFO/" class="md-nav__link">
<span class="md-ellipsis">
Session Info
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEVICE_FIELD_LOCK/" class="md-nav__link">
<span class="md-ellipsis">
Field Lock/Unlock
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4_2" >
<label class="md-nav__link" for="__nav_4_2" id="__nav_4_2_label" tabindex="0">
<span class="md-ellipsis">
Icons and Topology
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_4_2_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4_2">
<span class="md-nav__icon md-icon"></span>
Icons and Topology
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../ICONS/" class="md-nav__link">
<span class="md-ellipsis">
Icons
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../NETWORK_TREE/" class="md-nav__link">
<span class="md-ellipsis">
Network Topology
</span>
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5" >
<label class="md-nav__link" for="__nav_5" id="__nav_5_label" tabindex="0">
<span class="md-ellipsis">
Troubleshooting
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_5_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_5">
<span class="md-nav__icon md-icon"></span>
Troubleshooting
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../DEBUG_TIPS/" class="md-nav__link">
<span class="md-ellipsis">
General Tips
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../COMMON_ISSUES/" class="md-nav__link">
<span class="md-ellipsis">
Common issues
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../LOGGING/" class="md-nav__link">
<span class="md-ellipsis">
Inspecting Logs
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEBUG_API_SERVER/" class="md-nav__link">
<span class="md-ellipsis">
API Server Issues
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEBUG_INVALID_JSON/" class="md-nav__link">
<span class="md-ellipsis">
Invalid JSON Issues
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEBUG_PHP/" class="md-nav__link">
<span class="md-ellipsis">
PHP Issues
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEBUG_PLUGINS/" class="md-nav__link">
<span class="md-ellipsis">
Plugin Issues
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../WEB_UI_PORT_DEBUG/" class="md-nav__link">
<span class="md-ellipsis">
Web UI Port Issues
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../WORKFLOWS_DEBUGGING/" class="md-nav__link">
<span class="md-ellipsis">
Workflows Issues
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_6" >
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<span class="md-ellipsis">
Development
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_6_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_6">
<span class="md-nav__icon md-icon"></span>
Development
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_6_1" >
<label class="md-nav__link" for="__nav_6_1" id="__nav_6_1_label" tabindex="0">
<span class="md-ellipsis">
Plugin and app development
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_6_1_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_6_1">
<span class="md-nav__icon md-icon"></span>
Plugin and app development
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../DEV_ENV_SETUP/" class="md-nav__link">
<span class="md-ellipsis">
Environment Setup
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../BUILDS/" class="md-nav__link">
<span class="md-ellipsis">
Builds
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEV_DEVCONTAINER/" class="md-nav__link">
<span class="md-ellipsis">
Devcontainer
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEV_PORTS_HOST_MODE/" class="md-nav__link">
<span class="md-ellipsis">
Devcontainer Ports
</span>
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_6_1_5" >
<label class="md-nav__link" for="__nav_6_1_5" id="__nav_6_1_5_label" tabindex="0">
<span class="md-ellipsis">
Custom Plugins
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="3" aria-labelledby="__nav_6_1_5_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_6_1_5">
<span class="md-nav__icon md-icon"></span>
Custom Plugins
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../PLUGINS_DEV/" class="md-nav__link">
<span class="md-ellipsis">
Overview
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PLUGINS_DEV_QUICK_START/" class="md-nav__link">
<span class="md-ellipsis">
Quick Start
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PLUGINS_DEV_DATA_CONTRACT/" class="md-nav__link">
<span class="md-ellipsis">
Data Contract
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PLUGINS_DEV_SETTINGS/" class="md-nav__link">
<span class="md-ellipsis">
Settings System
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PLUGINS_DEV_DATASOURCES/" class="md-nav__link">
<span class="md-ellipsis">
Data Sources
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PLUGINS_DEV_UI_COMPONENTS/" class="md-nav__link">
<span class="md-ellipsis">
UI Components
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../PLUGINS_DEV_CONFIG/" class="md-nav__link">
<span class="md-ellipsis">
Config Lifecycle
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../FRONTEND_DEVELOPMENT/" class="md-nav__link">
<span class="md-ellipsis">
Frontend Development
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DATABASE/" class="md-nav__link">
<span class="md-ellipsis">
Database
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../SETTINGS_SYSTEM/" class="md-nav__link">
<span class="md-ellipsis">
Settings
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../VERSIONS/" class="md-nav__link">
<span class="md-ellipsis">
Versions
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../DEVICE_HEURISTICS/" class="md-nav__link">
<span class="md-ellipsis">
Icon and Type guessing
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_6_2" >
<label class="md-nav__link" for="__nav_6_2" id="__nav_6_2_label" tabindex="0">
<span class="md-ellipsis">
API
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_6_2_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_6_2">
<span class="md-nav__icon md-icon"></span>
API
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../API/" class="md-nav__link">
<span class="md-ellipsis">
Overview
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_DEVICES/" class="md-nav__link">
<span class="md-ellipsis">
Devices Collection
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_DEVICE/" class="md-nav__link">
<span class="md-ellipsis">
Device
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_DEVICE_FIELD_LOCK/" class="md-nav__link">
<span class="md-ellipsis">
Device Field Lock
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_SESSIONS/" class="md-nav__link">
<span class="md-ellipsis">
Sessions
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_SETTINGS/" class="md-nav__link">
<span class="md-ellipsis">
Settings
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_EVENTS/" class="md-nav__link">
<span class="md-ellipsis">
Events
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_MESSAGING_IN_APP/" class="md-nav__link">
<span class="md-ellipsis">
Messaging in-app
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_METRICS/" class="md-nav__link">
<span class="md-ellipsis">
Metrics
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_NETTOOLS/" class="md-nav__link">
<span class="md-ellipsis">
Net Tools
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_ONLINEHISTORY/" class="md-nav__link">
<span class="md-ellipsis">
Online History
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../API_SYNC/" class="md-nav__link">
<span class="md-ellipsis">
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<h1 id="scanning-remote-or-inaccessible-networks">Scanning Remote or Inaccessible Networks</h1>
<p>By design, local network scanners such as <code>arp-scan</code> use ARP (Address Resolution Protocol) to map IP addresses to MAC addresses on the local network. Since ARP operates at Layer 2 (Data Link Layer), it typically works only within a single broadcast domain, usually limited to a single router or network segment.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Ping and <code>ARPSCAN</code> use different protocols so even if you can ping devices it doesn't mean <code>ARPSCAN</code> can detect them.</p>
</div>
<p>To scan multiple locally accessible network segments, add them as subnets according to the <a href="../SUBNETS/">subnets</a> documentation. If <code>ARPSCAN</code> is not suitable for your setup, read on.</p>
<h2 id="complex-use-cases">Complex Use Cases</h2>
<p>The following network setups might make some devices undetectable with <code>ARPSCAN</code>. Check the specific setup to understand the cause and find potential workarounds to report on these devices.</p>
<h3 id="wi-fi-extenders">Wi-Fi Extenders</h3>
<p>Wi-Fi extenders often <strong>block or proxy Layer-2 broadcast traffic</strong>, which can prevent network scanning tools like <code>arp-scan</code> from detecting devices behind the extender. This can happen <strong>even when the extender uses the same SSID and the same IP subnet</strong> as the main network.</p>
<p>Please note that being able to <code>ping</code> a device does <strong>not</strong> mean it is discoverable via <code>arp-scan</code>.</p>
<ul>
<li><code>arp-scan</code> relies on <strong>Layer 2 (ARP broadcast)</strong></li>
<li>ICMP (<code>ping</code>) operates at <strong>Layer 3 (routed traffic)</strong></li>
</ul>
<p>That’s why devices behind extenders may respond to ping but remain undiscoverable via <code>arp-scan</code>.</p>
<blockquote>
<p><strong>Possible workaround</strong>:
If the extender uses a separate subnet, scan that subnet directly. Otherwise, use DHCP-based discovery plugins or router integration instead of ARP. See the <strong>Other Workarounds</strong> section below for more details.</p>
</blockquote>
<h3 id="vpns">VPNs</h3>
<p>ARP operates at Layer 2 (Data Link Layer) and works only within a local area network (LAN). VPNs, which operate at Layer 3 (Network Layer), route traffic between networks, preventing ARP requests from discovering devices outside the local network.</p>
<p>VPNs use virtual interfaces (e.g., <code>tun0</code>, <code>tap0</code>) to encapsulate traffic, bypassing ARP-based discovery. Additionally, many VPNs use NAT, which masks individual devices behind a shared IP address.</p>
<blockquote>
<p><strong>Possible workaround</strong>: Configure the VPN to bridge networks instead of routing to enable ARP, though this depends on the VPN setup and security requirements.</p>
</blockquote>
<h1 id="other-workarounds">Other Workarounds</h1>
<p>The following workarounds should work for most complex network setups.</p>
<h2 id="supplementing-plugins">Supplementing Plugins</h2>
<p>You can use supplementary plugins that employ alternate methods. Protocols used by the <code>SNMPDSC</code> or <code>DHCPLSS</code> plugins are widely supported on different routers and can be effective as workarounds. Check the <a href="../PLUGINS/">plugins list</a> to find a plugin that works with your router and network setup.</p>
<h2 id="multiple-netalertx-instances">Multiple NetAlertX Instances</h2>
<p>If you have servers in different networks, you can set up separate NetAlertX instances on those subnets and synchronize the results into one instance using the <a href="https://github.com/netalertx/NetAlertX/tree/main/front/plugins/sync"><code>SYNC</code> plugin</a>.</p>
<h2 id="manual-entry">Manual Entry</h2>
<p>If you don't need to discover new devices and only need to report on their status (<code>online</code>, <code>offline</code>, <code>down</code>), you can manually enter devices and check their status using the <a href="https://github.com/netalertx/NetAlertX/blob/main/front/plugins/icmp_scan/"><code>ICMP</code> plugin</a>, which uses the <code>ping</code> command internally.</p>
<p>For more information on how to add devices manually (or dummy devices), refer to the <a href="../DEVICE_MANAGEMENT/">Device Management</a> documentation.</p>
<p>To create truly dummy devices, you can use a loopback IP address (e.g., <code>0.0.0.0</code> or <code>127.0.0.1</code>) or the <code>Force Status</code> field so they appear online.</p>
<h2 id="nmap-and-fake-mac-addresses">NMAP and Fake MAC Addresses</h2>
<p>Scanning remote networks with NMAP is possible (via the <code>NMAPDEV</code> plugin), but since it cannot retrieve the MAC address, you need to enable the <code>NMAPDEV_FAKE_MAC</code> setting. This will generate a fake MAC address based on the IP address, allowing you to track devices. However, this can lead to inconsistencies, especially if the IP address changes or a previously logged device is rediscovered. If this setting is disabled, only the IP address will be discovered, and devices with missing MAC addresses will be skipped.</p>
<p>Check the <a href="https://github.com/netalertx/NetAlertX/tree/main/front/plugins/nmap_dev_scan">NMAPDEV plugin</a> for details</p>
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