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9-Port NAT Secure Switch, 100Mbps NAT throughput

0 products currently in stock.

The stock was last updated at 9:43 am Monday, 27 May, 2024. Please contact us for lead times if needed.

Series Description

The NSG3309 Series are compact 9-port NAT switches, equipped with 7 or 9 GbE RJ-45 ports and up to 2 Gbps SFP Fiber links. With configurable WAN/LAN ports and NAT features, accessibility for internal resources is fully controlled and protected. And combined with RSTP support, rings can be set up on both WAN and LAN side for full network redundancy.

Furthermore, this switch series’ IP30 metal enclosure, slim and flat shape and DIN rail mountable housing allows easy deployment in harsh environments. And being compliant with IEC62443-4-2 and IEC62443-4-1, they achieve both product security features and requirements for secure development life-cycle.

With these industrial-grade features, NSG3309 switches are ideal to be positioned as a proxy at the edge of networks.

Embedded SD Card Slot: Automatically backup configurations
periodically for use as the start-up configuration in the next booting. Recorded syslog can be saved in the SD card as well.

Virtual LAN: Divide local networks with 802.1q tagging to enhance data security and network efficiency.

Integrated NAT: Network deployment made simple with full NAT modes including 1:1 NAT, Virtual NAT, IP Masquerade, and DMZ.

Access Control: MAC/IPv4-based ACL is supported for LAN control.

Multi-Admin: Multiple Admin accounts with read-&-write or read-only access.

IEC62443: Development based on IEC 62443-4-1 and compliant with IEC 62443-4-2 to meet industrial network security standards.


Flexibility with Configurable WAN/LAN

NSG3309 series’ RJ-45 GbE ports can be configured as LAN or WAN ports. With built-in NAT functions, an extra router is not required for access between interior and exterior networks.

1:1 NAT

Establish WAN to LAN communication initiating from either side. Each LAN device is allocated a dedicated IP address from the external network, without the need of extra configuration on a router/gateway, and regardless of protocols.

Virtual NAT

Virtual NAT combines 1:1 NAT and virtual routing mechanisms. With 1:1 NAT, each external IP will be mapped to a virtual IP, and with this virtual IP, a virtual route will be created for accessibility to the LAN servers.

IP Masquerade

NSG3309 Series can act as a network proxy, allowing access of different LAN servers via a single external IP address with different TCP/UDP ports.


Isolate specific LAN servers in the DMZ network to allow access from the external network while keeping the internal network secured.

WAN & LAN Backup

The NSG3309 series are equipped with configurable WAN/LAN ports. For WAN backup, integrate switch into an RSTP ring with 2 WAN ports connecting to 2 different uplinks. As a result, the redundant uplink will take over when the main uplink router fails. Simultaneously, RSTP allows for redundant topology on the LAN side to ensure network continuity.

Additional information

RJ45 Ports

Fiber Optics Ports

LED Indicators

Relay Output

SD-Card Slot


NAT Throughput

Switching Capacity

Switching Fabric

Packet Buffer Size

MAC Table Size

Jumbo Frame

Ethernet Standards


IP Version

1:1 NAT

Power LED




LTE Signal


GNSS (Optional)

Input Voltage

Power Consumption

Reverse Polarity Protection


Dimension (W x H x D)



Reset Button

Operating Temperature

-30 to +75 °C

Storage Temperature

Ambient Relative Humidity

Ingress Protection Rating



Virtual COM



System Management

Power Management

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Product Brand

ATOP Technologies is a leading brand in the world of online retail, providing a wide range of high-quality electronic products at affordable prices. Delivering ready-made and tailored industrial networking solutions, built to withstand the demands of industry and to meet specific project requirements.

NSG3309 Series

The NSG3309 is part of a wider series. A series refers to a collection of related products or components designed to work together seamlessly, typically within a specific industry or application. These series often share similar features and functionalities, ensuring compatibility and ease of integration for users.

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Version Name Time Size Download
v1.14 NSG3309 Firmware 2022-10-21 14.09 MB Download


Version Name Time Size Download
v1.5 Datasheet EN 2023-10-02 413.56 KB Download
v1.4 Datasheet EN 2023-06-21 411.94 KB Download
v1.3 Datasheet EN 2022-10-26 506.2 KB Download


Version Name Time Size Download
v0.3 NSG3309 User Manual 2022-10-21 2.62 MB Download

Hardware Installation Guide

Version Name Time Size Download
v0.1 NSG3309 Hardware Installation guide 2022-10-21 648.8 KB Download
Supported Documents & Firmware Last Updated: March 5, 2024