Zyxel Networks announced the addition of the USG FLEX firewall series to its signature Nebula Cloud Networking solution. USG Firewalls add a centralized approach to a company’s zero-trust network security. Nebula Together updates are powered by a comprehensive portfolio of high-performance, easy-to-use, Nebula-compatible wireless access points, network switches and firewalls. ZLD5.0 firmware is offered as a free upgrade as part of the Nebula Together update.
Source: https://www.helpnetsecurity.com/2021/04/13/zyxel-nebula-usg-flex/