USG FLEX Firewall

USG FLEX 500H

Awards & Reviews

Poc Network

Pretty rock solid when it comes to small business

CRN

Tech Innovator Awards Network Security SMB - Winner

IT Pro

A competitively priced UTM security appliance

PUR 2025

Security Solution Network Firewall Champion

MB Reviews

Excellent upgrade over its predecessor

A New Era in Cybersecurity

USG FLEX H series provides secure, fast protection with ground-breaking high performance for Virtual Private Networks (VPN) and Unified Threat Management (UTM), a multi-layered approach to protecting the Firewall, the network infrastructure and connected users by leveraging Zyxel’s high-performance hardware and state-of-the-art AI Security Cloud architecture.

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Ultra High Performance

Ultra-high Performance powered by our next-generation multi-core hardware and Fastpath technology to create ultra-high efficiency. The USG FLEX H series can boost performance by up to 3x, optimizing utilization of its processors and allowing Zyxel to deliver superior performance to satisfy the needs required by demanding and high-speed networks.

Port Flexibility, Multi-G and PoE+

With 2.5 Gbps and 10 Gbps Port Speed options, The USG FLEX H also features software-defined ports, allowing you true flexibility in the configuration and tailoring of each USG FLEX H as required (WAN or LAN).

The USG FLEX H offers up to 2 x 30W PoE+ integrated ports *1 to help reduce complexity by simplifying installations and reduce install costs by allowing you to power devices like 5G Routers, latest WiFi, or appliances like VoIP Phones directly from the USG FLEX H itself.

Cloud & on-prem in sync

Nebula revolutionizes network management with Smart Sync, enabling seamless cloud-based configuration of on-premise firewalls. Effortlessly enforce unified security policies, monitor threats in real time, and optimize performance from anywhere. This cutting-edge solution delivers unmatched convenience, scalability, and robust protection across hybrid cloud environments.

AI-powered cloud cybersecurity

Leverages AI-powered cloud intelligence to deliver high-assurance, multi-layered protection across the network. It defends against external attacks and internal misuse with advanced services such as cloud sandboxing, anti-malware, intrusion prevention, DNS/IP/URL filtering, and application patrol. Web filtering restricts harmful or inappropriate content, while traffic shaping and geo-IP filtering enhance policy enforcement.

Fast and Powerful uOS

The USG FLEX H series introduces our latest powerful uOS (Operating System). It is designed to increase security, minimize system response time, apply configuration changes instantly and optimize configuration and security policy management with its new intuitive UX (User Experience) design.

  • All specifications are subject to change without notice.
  • The USG FLEX H series models are compatible with different PoE+ integrated ports. Please refer to the spec table for more details.