ZyXEL Launches New Firmware to Fortify Network Defenses on ZyWALL Family of Security Solutions

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Firmware Version ZLD 4.20 Adds Key Features to Next-Generation ZyXEL USG and ZyWALL Security Appliances to Enhance Ease-of-Use and Make Networks More Secure

ANAHEIM, Calif.-ZyXEL Communications, a leading provider of secure broadband networking, Internet access and connected home products, today announced availability of a free major firmware upgrade for its next-generation ZyXEL USG and ZyWALL Security Appliances. Firmware version ZLD 4.20 makes it easier to use and manage the families of security appliances and provides a host of valuable new features and capabilities.

Key benefits of the new firmware include:


  • Enhanced Network Security – PCI-DSS compliance to safely handle online payments; Content Filtering 2.0 to improve detection rates for safe search on social networking platforms; GeoIP blocking to limit access from certain countries; TLS1.1/1.2 to enhance secure data exchange over the network.
  • Ease-of-Use and Deployment – Easy Mode allows users to quickly set up and configure the devices; GUI dashboard offers a complete summary of network security status at a glance; Setup Wizard provides setup tips and instructions; Cloud Helper automatically notifies users of future firmware updates; online glossaries to address troubleshooting and configuration questions.
  • New Functionality Saves Costs on Extending Wi-Fi Networks – Hotspot management enables device to act as a Wi-Fi hotspot with access control and Wi-Fi billing functions; Access Point Controller makes it easy to add, configure and maintain Wi-Fi access points on the network. 
  • High Availability Pro – A fully-redundant system keeps the device online in the event of a device failure. A dedicated heartbeat port can switch between two devices to provide seamless fail-over, making it easier to sync configuration settings and troubleshoot problems to avoid future downtime. Also simplifies deployments to help users avoid cabling nightmares.
“This major firmware release is available for all next-generation ZyXEL USG and ZyWALL Security Appliances, enabling existing users of our products to share the same enhanced usability, security and performance features and capabilities available on our newest solutions,” stated Tri Nguyen, Marketing Development Manager at ZyXEL. “This firmware release is evidence of ZyXEL’s dedication toward continuous improvement of our products to meet the ever-evolving network security requirements of growing businesses and organizations.”

The new ZLD 4.20 firmware, which is a free download for registered USG and ZyWALL products, is available through the product “Downloads” tab on the ZyXEL website. The ZyXEL family of security appliances carries a limited lifetime warranty and is available now through all ZyXEL authorized resellers and e-Commerce partners. For more information on ZyXEL and its families of connectivity solutions for homes and businesses, visit www.zyxel.com/us and follow us on Facebook, Twitter and LinkedIn.

About ZyXEL:

ZyXEL, a pioneer in IP technology for over two decades and trusted brand for over 25 years, provides a complete portfolio of multi-service LTE, fiber and DSL broadband gateways, home connectivity solutions, smart home devices and enterprise-class Ethernet switches, security and Wi-Fi equipment for small to mid-size businesses. ZyXEL offers integrated, interoperable network solutions based on open standards. Headquartered in Anaheim, California, ZyXEL offers its partners service-rich solutions backed by a domestic team of logistic, sales, and technical support professionals.