node-red-contrib-network-tools
Version:
Comprehensive network monitoring and discovery tools for Node-RED
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HTML
<script type="text/javascript"> RED.nodes.registerType('network-discovery', {
category: 'brdc-network-nodes',
color: '#FF6D00',
defaults: {
name: {value: ""},
subnet: {value: "192.168.1.0/24", validate: function(v) {
return v && (v.includes('/') || v.includes('-') || /^([0-9]{1,3}\.){3}[0-9]{1,3}$/.test(v));
}},
portRange: {value: "22,80,443"},
timeout: {value: 3000, validate: RED.validators.number()},
concurrent: {value: 10, validate: RED.validators.number()},
includeHostnames: {value: false},
includePorts: {value: false}
},
inputs: 1,
outputs: 1,
icon: "inject.png",
label: function() {
return this.name || "network-discovery";
},
oneditprepare: function() {
$("#node-input-includePorts").change(function() {
if ($(this).is(':checked')) {
$("#port-range-row").show();
} else {
$("#port-range-row").hide();
}
}).trigger('change');
}
});
</script>
<script type="text/html" data-template-name="network-discovery">
<div class="form-row">
<label for="node-input-name"><i class="icon-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
<div class="form-row">
<label for="node-input-subnet"><i class="fa fa-sitemap"></i> Subnet</label>
<input type="text" id="node-input-subnet" placeholder="192.168.1.0/24 or 192.168.1.1-192.168.1.50">
<div class="form-tips">CIDR notation (192.168.1.0/24), range (192.168.1.1-50), or single IP</div>
</div>
<div class="form-row">
<label for="node-input-timeout"><i class="fa fa-clock-o"></i> Timeout (ms)</label>
<input type="number" id="node-input-timeout" min="500" max="10000">
</div>
<div class="form-row">
<label for="node-input-concurrent"><i class="fa fa-tasks"></i> Concurrent</label>
<input type="number" id="node-input-concurrent" min="1" max="50">
<div class="form-tips">Number of simultaneous ping operations</div>
</div>
<div class="form-row">
<label for="node-input-includeHostnames"><i class="fa fa-tag"></i> Include Hostnames</label>
<input type="checkbox" id="node-input-includeHostnames">
<div class="form-tips">Perform reverse DNS lookup for discovered hosts</div>
</div>
<div class="form-row">
<label for="node-input-includePorts"><i class="fa fa-plug"></i> Include Port Scan</label>
<input type="checkbox" id="node-input-includePorts">
<div class="form-tips">Scan common ports on discovered hosts</div>
</div>
<div class="form-row" id="port-range-row">
<label for="node-input-portRange"><i class="fa fa-list"></i> Port Range</label>
<input type="text" id="node-input-portRange" placeholder="22,80,443 or 80-90">
<div class="form-tips">Comma-separated ports or ranges (e.g., 22,80,443 or 80-90,443)</div>
</div>
</script>
<script type="text/html" data-help-name="network-discovery"> <p>Discovers active devices on a network subnet with optional hostname resolution and port scanning.</p>
<h3>Inputs</h3>
<dl class="message-properties">
<dt class="optional">subnet <span class="property-type">string</span></dt> <dd>Network subnet to scan (overrides configuration)</dd>
<dt class="optional">portRange <span class="property-type">string</span></dt>
<dd>Ports to scan on discovered hosts</dd>
<dt class="optional">timeout <span class="property-type">number</span></dt>
<dd>Timeout in milliseconds for each ping</dd>
<dt class="optional">concurrent <span class="property-type">number</span></dt>
<dd>Number of concurrent ping operations</dd>
<dt class="optional">includeHostnames <span class="property-type">boolean</span></dt>
<dd>Whether to perform reverse DNS lookups</dd>
<dt class="optional">includePorts <span class="property-type">boolean</span></dt>
<dd>Whether to scan ports on discovered hosts</dd>
</dl> <h3>Outputs</h3>
<dl class="message-properties">
<dt>payload <span class="property-type">object</span></dt>
<dd>Discovery report with found devices and scan statistics</dd>
</dl>
<h3>Features</h3>
<ul>
<li><strong>Subnet Scanning:</strong> CIDR notation (/24), IP ranges (1.1.1.1-50), or single IPs</li>
<li><strong>Concurrent Processing:</strong> Configurable parallel ping operations</li>
<li><strong>Hostname Resolution:</strong> Optional reverse DNS lookups</li>
<li><strong>Port Scanning:</strong> Check common services on discovered hosts</li>
<li><strong>Progress Tracking:</strong> Real-time status updates during scan</li>
<li><strong>Flexible Configuration:</strong> Override settings via input messages</li>
</ul>
<h3>Configuration</h3>
<p><strong>Name:</strong> Optional name for the node</p>
<p><strong>Subnet:</strong> Network subnet to scan. Supports:</p>
<ul>
<li>CIDR notation: <code>192.168.1.0/24</code></li>
<li>IP range: <code>192.168.1.1-192.168.1.50</code> or <code>192.168.1.1-50</code></li>
<li>Single IP: <code>192.168.1.1</code></li>
</ul>
<p><strong>Timeout:</strong> Maximum wait time per ping in milliseconds (500-10000)</p>
<p><strong>Concurrent:</strong> Number of parallel ping operations (1-50)</p>
<p><strong>Add Hostnames:</strong> Perform reverse DNS lookup for discovered hosts</p>
<p><strong>Add Port Scan:</strong> Scan common ports on active hosts</p>
<p><strong>Port Range:</strong> Specify ports to scan (e.g., 22,80,443 or 80-90,443)</p>
<h3>Example Output</h3>
<pre>{
"subnet": "192.168.1.0/24",
"totalHosts": 254,
"aliveHosts": 12,
"scanDuration": "2024-01-01T00:00:00.000Z",
"devices": [
{
"ip": "192.168.1.1",
"alive": true,
"responseTime": 1.2,
"hostname": "router.local",
"openPorts": [22, 80, 443],
"timestamp": "2024-01-01T00:00:00.000Z"
}
],
"scanOptions": {
"portRange": "22,80,443",
"timeout": 3000,
"includeHostnames": true,
"includePorts": true
}
}</pre> <h3>Use Cases</h3>
<ul>
<li>Network inventory and asset discovery</li>
<li>Security monitoring and unauthorized device detection</li>
<li>Network documentation and mapping</li>
<li>Service availability monitoring</li>
<li>IoT device discovery and management</li>
</ul>
<h3>Security Considerations</h3>
<p><strong>Note:</strong> Use this node only on networks where you have permission to scan.
Unauthorized network scanning may be considered a security threat.</p>
<h3>Performance Tips</h3>
<ul>
<li>Limit the number of concurrent operations to reduce network load</li>
<li>Use lower timeouts for faster scans of local networks</li>
<li>Enable hostname resolution only when needed (slows down the scan)</li>
<li>Limit port ranges to necessary services</li>
</ul>
</script>