Next Working Day
On qualifying orders
UK Dispatched
Fast & reliable nationwide
Expert Support
Mon–Fri, 8 am – 6 pm
Genuine Brands
Authorised reseller
Next-working-day delivery. Order before 17:30 (England & Wales) or 16:00 (Northern Ireland, Republic of Ireland, Scotland) to receive next-working-day delivery. Orders placed before 17:30 Friday are delivered Monday; after 17:30 Friday arrive Tuesday. Upgrades — pre-9, pre-10:30, pre-noon, special and secure bulk — available at extra cost.
Orders over £100 (ex VAT) receive FREE next-working-day delivery across the UK.
Instant digital delivery. Software licences, subscriptions, warranties & insurance, and electronic copies are delivered the same day via email — provided a valid email address is entered at checkout.
This product is out of stock
We can email you when it's back in stock, confirm expected lead times, or recommend in-stock alternatives that meet the same requirements.

Zyxel USG Flex 100
Firewall
4 ports
1GbE
Weight: 1.40 KG
- Robust security without sacrificing performance
- Comprehensive support to IPv6
- Robust hybrid VPN (IPSec/SSL/2TP)
- Zero-configuration remote access with EASY VPN
- Supports L2TP VPN on mobile device (iPhone and Android phone)
- ICSA firewall, IPSec certification
- Content filter stops malware and Web threats
- Powerful Email security
- Non-stop Internet access with multiple WAN and 3G backups
Similar Products
Overview
As broadband quickly becomes a necessity in the business world facing network security threats, the breaches evolve into highly sophisticated attacks to paralyze networks and to steal sensitive information. In response to such attacks, small businesses have to meet the great challenge protecting their networks. The Zyxel USG 100 Series is designed for small business to provide real-time inspection and multi-layer network protection to prevent the network from threats. The USG Series embodies Stateful Packet Inspection (SPI) firewall, Anti-Virus (AV), Intrusion Detection and Prevention (IDP), content filtering, anti-spam and VPN (IPSec/SSL/L2TP) features in one box. In addition, the USG Series not only offers complete security license to fulfill your demand but also guarantees the continuous firmware upgrades to save your cost. Incorporating comprehensive security features in the connected devices, the USG Series safeguards your organization's customer and company records, intellectual properties as well as critical resources from both external and internal threats.
Specifications
General
- Height
- 3.3 cm
- Width
- 21.6 cm
- Device Type
- Firewall
- Weight
- 850 g
- Depth
- 14.73 cm
Connections & Expansion
- Interfaces
- 4 x 1000Base-T - RJ-45 (LAN / DMZ), 1 x 1000Base-T - RJ-45 (WAN), 1 x USB 3.0 - Type A4 x 1000Base-T - RJ-45 (LAN / DMZ), 1 x 1000Base-T - RJ-45 (WAN), 1 x USB 3.0 - Type A
Networking
- Form Factor
- External
- Ports Qty
- 4
- Data Link Protocol
- Ethernet, Fast Ethernet, Gigabit Ethernet
- Connectivity Technology
- Wired
- Status Indicators
- Power, system, WAN, LAN
- Performance
- SPI firewall throughput: 900 Mbps, VPN throughput: 270 Mbps, IPS throughput: 540 Mbps, VPN throughput (IMIX): 100 Mbps, Unified Threat Management (UTM) throughput: 360 Mbps, AV throughput: 360 Mbps, Anti-malware throughput: 360 Mbps
- Capacity
- Concurrent TCP sessions: 300000, Concurrent IPSec VPN tunnels: 40, Concurrent SSL VPN users: 30, VLANs supported: 8, Concurrent devices: 64
- Compliant Standards
- IEEE 802.1x, IEEE 802.1Q
- Network / Transport Protocol
- IPSec, L2TP, PPPoE, HTTP, HTTPs, FTP
- Routing Protocol
- GRE, static IP routing, policy-based routing (PBR), OSPF, RIP-1, RIP-2, BGP
- Remote Management Protocol
- Syslog, HTTP, HTTPS, SNMP 1, SNMP 3, SNMP 2c
- Features
- Fanless, sandboxing, anti-malware protection, Intrusion Prevention System (IPS), Application Patrol, e-mail protection, Reputation Enabled Defense, Web Filtering, SecuReporter, collaborative detection & response, SSL inspection, Geo Enforcer, 2-factor authentication, device insight, security profile synchronise, Microsoft Azure support, Amazon VPC, cloud managed, router mode, bridge mode, NAT support, VPN support, PAT support, SNAT support, DHCP client, DHCP relay, DHCP server, dynamic DNS, session rate limiting, Bandwidth Limiter, 802.1x authentication, IP-MAC binding, Single Sign-On (SSO) support, e-mail notification, virtual server support, firmware upgradable, Syslog support, traffic monitoring
- Encryption Algorithm
- IKEv2, SSL, WPA2-Enterprise
- Authentication Method
- RADIUS, LDAP, Extensible Authentication Protocol (EAP), X.509 certificates, XAUTH authentication
Miscellaneous
- Cables Included
- 1 x console cable
- MTBF
- 989,810.8 hour(s)
- Compliant Standards
- EMC Class B, FCC Part 15 B, BSMI, EN 60950-1, LVD
Power
- Power Consumption Operational
- 12.5 Watt
- Voltage Required
- DC 12 V
- Power Device
- External power adapter
Software / System Requirements
- Software Included
- UTM licence bundle (1 year)
Environmental Parameters
- Min Operating Temperature
- 0 °C
- Max Operating Temperature
- 40 °C
- Humidity Range Operating
- 10 - 90% (non-condensing)
Dimensions & Weight (Shipping)
- Shipping Depth
- 19 cm
- Shipping Height
- 10 cm
- Shipping Weight
- 1.4 kg
- Shipping Width
- 28.4 cm





