Gateway3 4G 1SFP

Cloud-managed VPN Firewall with 4 x Gigabit (1x PoE+) Ethernet ports and one SFP slot

ESG320

Product Highlight

EnGenius ESG320 Cloud-Managed VPN Firewall is designed for cost-conscious SMBs, offering advanced features such as load balancing, dual-WAN, and secure site-to-site VPN. Seamlessly integrated with the EnGenius Cloud platform, it simplifies configuration and provides centralized management from anywhere. This high-performance solution delivers exceptional value by combining robust security, superior connectivity, and the flexibility to scale with growing business needs.

Simple, unified cloud management for any size business

Intuitive and centralized device visibility from anywhere

Dual GE WAN and Dual GE LAN for maximum performance

Dual-core 2.1 GHz processor for greater speed and power

Built-in load balancing and safeguards with dual-WAN and cellular failover

PoE+ port to power up a Wi-Fi AP, IP camera or IP phone

Stateful firewall with high-efficiency filtering and inspection to enhance security

High-speed and secure site-to-site VPN and client VPN

Quick self-healing VPN and VLAN setup for faster and easier deployments

Touchless system maintenance and automatic updates

Multiple passthrough and routing options

Captive portal with external radius capabilities

Integrated cloudbrink service to offer ZTNA solution

High Availability (HA) with automatic failover to ensure continuous network uptime

Built-in IDS/IPS for real-time threat detection and proactive attack prevention

Hardware

CPU Processor

Quad Core

Operating Frequency

2.2GHz

Memory

8GB (v1)

4GB (v2)

Flash Storage

16GB

RJ-45 Interface

8×2.5G

SFP Interface

2 x SFP+

PoE Ports

4

PoE Standard

802.3 af/at

Total PoE Budget

120W

I/O Interfaces

1 x RJ-45 console
1 x USB 3.0

Mounting Method

Rack mount

Security

TPM

Perfomance & Capacity

Firewall (SPI throughput)

6.8G

VPN throughput

1.5G

Max. Concurrent VPN Tunnels

300

Max. Concurrent VPN Users

380

Max. TCP/NAT Concurrent Sessions

1250000 (v1)

1000000 (v2)

Max VLAN

160

IPS Throughput

1.2G

Firewall

Firewall Features

Stateful Packet Inspection
Policy Rules
Port Forwarding
1:1 NAT
Allow Inbound Services
Layer 7 Application Firewall

VPN

Site-to-Site VPN

Mesh VPN / Hub-and-Spoke

Encryption

3DES, AES (256/192/128-bit)

Authentication

MD5, SHA1, SHA2 (256-bit)

Key Management

IKEv1 (x-auth, mode-config),
IKEv2 (EAP, configuration payload)

VPN Features

Site-to-Site VPN
Client VPN (IPsec / SecuPoint SSL)
Policy-based VPN
IPSec NAT traversal (NAT-T)
Dead Peer Detection (DPD)
Auto-VPN Connection
Auto NAT traversal

Networking

Operation Mode

Routed / Passthrough

Multiple WANs

Dual

Bandwidth Limit

Per client / Per Interface

Traffic Load Balancing

WAN load balancing with WRR

Networking Features

Static Route
Multiple WANs
USB Cellular
User Authentication
PPPoE
VLAN Tagging
Captive Portal
Custom Splash Page
Dynamic Routing
Bandwidth Limit
Traffic Load Balancing
DHCP client/server/relay
Dynamic DNS support
Policy Based Routing
Application Bandwidth Control
High Availability

Security Service

CloudBrink
IDS/IPS

Environmental & Physical

Power

internal 300w power

Operation Temperature

0°C to 40°C

Humidity (non-condensing)

5 to 95% non-condensing

Dimensions & Weight

Dimensions

Weight: 5.82 lbs. (2.64k g)
Length: 13” (330 mm)
Width: 9.06” (230 mm)
Height: 1,73” (44 mm)

Package Contents

Power cord
RJ-45 Console Cable
Rack Mount Kit
Product Card

Regulatory Compliance

FCC Part 15 (Class B)
IC
CE EMC
CB
UL

Model Comparison

	Gateway3 4G 1SFP	Gateway6 4mG	Gateway5 4mG	Gateway6 8mG 2SFP+
Model Number	ESG320	ESG610	ESG510	ESG620
CPU Processor	Dual Core	Quad Core	Quad Core	Quad Core
Operating Frequency	2.1GHz	2.2GHz	1.6GHz	2.2GHz
Memory	4GB	8GB (v1);4GB (v2)	4GB	8GB (v1);4GB (v2)
Flash Storage	8GB	8GB	8GB	16GB
RJ-45 Interface	4 x 1G	4 x 2.5G	4 x 2.5G	8 x 2.5G
SFP Interface	1 x SFP	-	-	2 x SFP+
PoE ports	1	1	1	4
PoE Standard	af/at	af/at	af/at	af/at
Total PoE Budget	30W	30W	30W	120W
Mounting Method	Wall mount	Wall mount	Wall mount	Rack mount
Firewall (SPI Throughput)	3G	6.8G	4G	9.5G*
VPN throughput	900M	1.5G	970M	1.7G*
Max. Concurrent VPN Tunnels	100	300	200	300
IPS Throughput	650 M	1.2G	700 M	1.2G
	BUY	BUY	BUY	BUY
	View	View	View	View

Related Products

Type	Name	Version	Release Date	Checksum
Data Sheet	Gateway3 4G 1SFP – ESG320 Datasheet	v1.3	May 14, 2026
Quick Guide	Gateway3 4G 1SFP_ESG320_QSG_EN	v1.0	January 02, 2026
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.68-6.bin	v1.2.68	January 10, 2025	× Checksum MD5 845d25d47d764e946b82657e8c0bff82 SHA2 9f41207bf972ff09041ddd7e6679bcab66d5c9f4496cc0192b4959735eb34cb0 Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.70-12.bin	v1.2.70	March 06, 2025	× Checksum MD5 f2cc471add2bb323730b5fabff7d9a47 SHA2 d13634ff1115985164e810edd8758a73c48f6f7113ee7b7397a59fe2db2dd98b Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.71-0.bin	v1.2.71	April 18, 2025	× Checksum MD5 c2392073709238afde22d2a1042c05cd SHA2 7df1e9070fbdf67d97de038b34553cbb9df678da86eb57542e5a89f53eec7886 Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.80-6.bin	v1.2.80-6	July 09, 2025	× Checksum MD5 325aff893257d709a02835a9a91799c4 SHA2 d521d40681c3ff60139ca811eab57883d2e6562e7d330f3beeabb8e93af46939 Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.81-4.bin	v1.2.81-4	July 31, 2025	× Checksum MD5 5641816abfa9b99381a44f1a6b50a4b7 SHA2 f89d9fd587aafa331c2ce35b97667a0713ddc64354a82875ea868e783b905ca0 Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.82-0.bin	v1.2.82-0	September 02, 2025	× Checksum MD5 4f72b31d9b9aac016fba6957f988cdc4 SHA2 1517aff499e8960a95e788a99513fa7e40c1bd53a4992187f070f310dce78438 Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.85-16.bin	v1.2.85-16	January 09, 2026	× Checksum MD5 b3683c40f0e96be834d245fa08bb3a36 SHA2 906e61097c663767fef03c76c11610a5e2be36e604628be1ef251b8120f721a6 Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.90-8.bin	v1.2.90-8	February 12, 2026	× Checksum MD5 4fddcbfa58afb40100a0ca2942416e72 SHA2 a380208be9ad1c39801e5d5364ec4b67aaf54117c4368206f40c3c1c9fc7370e Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.91-0.bin	v1.2.91-0	March 06, 2026	× Checksum MD5 d47ce23c59830b15affb05a64ac10cbc SHA2 9c9c7ff13b022428cf66206219c33a7822e4c8436175dd927c8daca12c70a76c Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.95-9.bin	v1.2.95-9	April 08, 2026	× Checksum MD5 5042664728bc21d6ff62a387e59980bf SHA2 a98e7ca30f39a4f65b77e05d4f66eb754bdbe9fbd14ea7b1b4a0ce17615ff4c3 Close
MIB	ENGENIUS_ESG_MIB	v1.0	June 17, 2026
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.100-7.bin	v1.2.100-7	June 17, 2026	× Checksum MD5 6370f9da33f2e6f16bbd5c819741566c SHA2 5d69eb0051592de27cb90933706f2f68a3a903da7f3813ee59f9c8bf072d7429 Close
Firmware	Gateway3_4G_1SFP_ESG320_firmware_v1.2.101-3.bin	v1.2.101-3	July 06, 2026	× Checksum MD5 c7458e5df9d37cca3d8be224c557f162 SHA2 c6e45dee37b44015858da2f9f9652e815ef3f986a07b40b899896813862fba5f Close

Cloud-managed VPN Firewall with 4 x Gigabit (1x PoE+) Ethernet ports and one SFP slot

Product Highlight

Hardware

CPU Processor

Operating Frequency

Memory

Flash Storage

RJ-45 Interface

SFP Interface

PoE Ports

PoE Standard

Total PoE Budget

I/O Interfaces

Mounting Method

Security

Perfomance & Capacity

Firewall (SPI throughput)

VPN throughput

Max. Concurrent VPN Tunnels

Max. Concurrent VPN Users

Max. TCP/NAT Concurrent Sessions

Max VLAN

IPS Throughput

Firewall

Firewall Features

VPN

Site-to-Site VPN

Encryption

Authentication

Key Management

VPN Features

Networking

Operation Mode

Multiple WANs

Bandwidth Limit

Traffic Load Balancing

Networking Features

Security Service

Environmental & Physical

Power

Operation Temperature

Humidity (non-condensing)

Dimensions & Weight

Dimensions

Package Contents

Regulatory Compliance

Model Comparison

Gateway3 4G 1SFP

Gateway6 4mG

Gateway5 4mG

Gateway6 8mG 2SFP+

Related Products

Gateway5 4mG

Cloud-managed VPN Firewall with 4 x 2.5-Gigabit (1x PoE+) Ethernet ports

Gateway6 4mG

Cloud-managed VPN Firewall with 4 x 2.5-Gigabit (1x PoE+) Ethernet ports

Gateway6 8mG 2SFP+

Cloud-managed VPN Firewall with 8x 2.5-Gigabit (4 PoE+) Ethernet ports and two SFP+ slots

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