ZYXEL USGFLEX50H Cyber Security Firewall – 2 Gbps, 25 Users, Nebula Cloud, Fanless

Compact, reliable security for growing networks

The Zyxel USGFLEX50H Cyber Security Firewall is a compact, fanless appliance designed for small to mid-size offices that need strong, layered protection without adding noise or complexity. It pairs a robust hardware base with flexible software options, so you can tailor protection to your needs while keeping operations simple.

Security that scales with your environment starts with layered defenses and visibility. The Entry Defense Pack includes reputation filtering for IP, DNS, and URL data, plus SecuReporter visibility to help you understand traffic patterns. If you opt for the Gold Security Pack, you unlock enhanced protection such as anti-malware, sandboxing, web filtering, and advanced intrusion prevention and full UTM capabilities. These options let you balance protection with performance as your network evolves.

• Entry Defense Pack: reputation filtering and visibility tools for proactive monitoring
• Gold Security Pack (optional): anti-malware, sandboxing, web filtering, IPS, and full UTM

The USGFLEX50H also shines in offline-first environments. It supports offline setup via the Nebula portal wizard and firmware updates over FTP on the local network. After updates, the web interface remains accessible even if the internet connection is temporarily unavailable, helping you manage devices with confidence.

Performance you can rely on

With a 2,000 Mbps firewall throughput, the device handles busy offices, while IPS operates at up to 1,000 Mbps and VPN traffic can reach 500 Mbps. It supports up to 25 users, 100,000 concurrent sessions, 20 IPSec tunnels, 15 SSL VPN users, and up to eight VLANs, offering a stable foundation for secure remote access and internal segmentation.

• 2,000 Mbps firewall throughput
• 1,000 Mbps IPS throughput
• 500 Mbps VPN throughput
• Supports up to 25 users and 100,000 concurrent sessions
• Up to 20 IPSec tunnels, 15 SSL VPN users, and 8 VLANs

Flexible networking and central management

Five 1G RJ-45 ports are assignable as WAN or LAN, enabling WAN load balancing and active-backup failover for uninterrupted connectivity. You can create up to eight VLAN interfaces and use Link Aggregation to increase bandwidth and resilience. Centralized security policy control and real-time monitoring are provided through Nebula Cloud, with SD-VPN orchestration and support for IKEv2/IPSec, SSL VPN, and Tailscale VPN. The solution can manage up to 12 APs in one ecosystem, making it suitable for growing deployments.

In short, the USGFLEX50H blends quiet, compact hardware with multi-layered security, flexible networking, and cloud-based management to help you protect, monitor, and adapt your network over time. This is not a guarantee of outcomes, but a framework that supports secure, controlled connectivity as your needs evolve.