uOS1.38 Update: What's New for USG FLEX H Series

Zyxel_Avani

The latest USG FLEX H firewall series is powered by the new uOS, which is designed to minimize system response time and improve overall system efficiency, including the following features:

• Collaborative Detection & Response

Enhances threat response with coordinated alert, block, and quarantine actions. Supports blocking malicious wireless clients, customizable warning and redirect messages, and IP or MAC-based exempt lists for trusted devices.

• Flexible, Secure SSL VPN Access

Multiple SSL VPN Profiles empower IT admins and service providers to assign tailored access by user or group. Control specific services, IPs, and routes with granular tunnel policies—delivering secure, efficient remote access with simplified, centralized management.

• Governance GenAI usage

Content Filtering adds new GenAI categories to help organizations manage and govern generative AI usage. For deeper visibility, Zyxel also integrates with Heartbot AnyInsight — an independently subscribed third-party service — which monitors GenAI prompts and responses to help defend against emerging threats such as prompt injection.

• Additional Enhancements
  • Security Policy Change Logs -Track every security policy change for complete audit visibility.
  • Security Best Practice -Guided recommendations to strengthen and complete your security settings.
  • Password Complexity- Prohibit password reuse and user account name matching.
  • Captive Portal - Easily customize your Captive Portal experience with flexible templates and downloadable example pages.
  • Wireless AP Controller WiFi Aid – Simplify wireless diagnostics and optimization with WiFi Aid.
  • Wireless AP Controller Rogue AP – Detect and alert on unauthorized Rogue APs instantly.
  • Wireless AP Controller Zero Wait DFS– Eliminate channel switching delays with Zero Wait DFS
  • Wireless AP Controller WBE665S– Expand managed wireless coverage with the new AP: WBE665S.

Release Date: April 13, 2026
Supported Models: USG FLEX 50H/50HP/100H/100HP/200H/200HP/500H/700H

ilyacolton

Okay, so based on everything you've said about the USG FLEX H firewall and its new uOS, I'm wondering: if you had to pick just one "absolute best" feature, which one do you think would most effectively tackle current security challenges, and why?