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Guardian sensors
Guardian sensors are passive network monitoring devices that provide asset visibility, detect threats, and support secure deployments across operational (OT) and Internet of Things (IoT) environments.
Technical specifications
Large enterprise
NSG-HS 3500
The NSG-HS 3500 Guardian sensor is the ultimate security solution for the most demanding enterprise networks. With support for 500,000 nodes and 3,000,000 Internet of Things (IoT) devices, it delivers unparalleled scalability and defense.

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- Guardian sensors
  Guardian sensors are passive network monitoring devices that provide asset visibility, detect threats, and support secure deployments across operational (OT) and Internet of Things (IoT) environments.
  - Technical specifications
    - Large enterprise
      - NSG-HS 3500
        The NSG-HS 3500 Guardian sensor is the ultimate security solution for the most demanding enterprise networks. With support for 500,000 nodes and 3,000,000 Internet of Things (IoT) devices, it delivers unparalleled scalability and defense.
      - NSG-HS 3000
        The NSG-HS 3000 Guardian sensor is a high-performance security appliance for extensive network infrastructures. Offering up to 6 Gbps throughput and support for 1,800,000 Internet of Things (IoT) devices, it provides cutting-edge protection.
      - NSG-H 2500
        The NSG-H 2500 Guardian sensor is an enterprise-grade security solution for mission-critical applications. With a capacity of 200,000 nodes and 1,200,000 Internet of Things (IoT) devices, it offers unmatched scalability and network defense.
      - NSG-H 2000
        The NSG-H 2000 Guardian sensor is built for high-density enterprise environments. Supporting up to 100,000 nodes and 600,000 Internet of Things (IoT) devices, it provides industry-leading security with 3 Gbps throughput.
    - Medium enterprise
    - Specialized requirements

NSG-HS 3500

The NSG-HS 3500 Guardian sensor is the ultimate security solution for the most demanding enterprise networks. With support for 500,000 nodes and 3,000,000 Internet of Things (IoT) devices, it delivers unparalleled scalability and defense.

Table 1. NSG-HS 3500
Maximum protected nodes	500,000
Maximum protected network elements	2,000,000
Maximum protected smart Internet of Things (IoT) devices	3,000,000
Maximum throughput	6 Gbps
Maximum Remote Collectors	50
Monitored ports	Modular, 12 customizable 4 x SFP+ available by default (SFP+ transceivers not included), 1 x RJ45 available by default, up to 17 total ports
Management ports	1x1000BASE-T
Expansion slots	3 slots available: 3 x 1000BaseT \| 3 x SFP \| 3 x SFP+
Storage	512 gigabyte (GB) for operating system (OS) and data
Form factor	1 rack unit
Maximum power consumption	750 W
Power supply	Dual 100-240V AC, 36 - 72V DC
Temperature range	32 - 104 ℉ / 0 - 40 ℃
Height x Width x Length	1.73 x 17.24 x 23.60 in / 44 x 438 x 600 mm
Weight	39.68 lb / 18 kg
Certifications	CE \| FCC \| UL