What's New for ZLD5.30

Zyxel_Stanley Posts: 1,367  Zyxel Employee
First Anniversary 10 Comments Friend Collector First Answer
edited October 2022 in Security Gateway New Release

Zyxel is committed to continuously updating your devices for important maintenance information. This latest release also enhances all-round functions of security appliances including:

ATP Firewall newly supports DoH and DoT Blocking and Monitoring

Once ATP firewall detects DNS over HTTPS (DoH) or the DNS over TLS (DoT) queries from the clients to known DoH servers, ATP will block these DNS queries to prevent users from bypassing internet restriction policies. These benefits include:

-Preventing users from bypassing company’s web filter.

-Retain visibility and security over all DNS traffic on your network.

-Efficiently route DNS queries and keep overall network healthy.


Feature Enhancements and Consolidated Bug fixes

Multiple enhancements and bug fixes include:

-Extended maximum blocking periods of rate based IPS signatures

-Remote Access VPN Wizard for SecuExtender IPsec VPN support Multiple DH Groups (DH2, DH14, DH21)

-Prevent misconfiguration when enable mode configure in L2TP VPN rules

-Device HA bug fix


Zyxel security advisory for multiple vulnerabilities of firewalls, AP controllers, and Aps






Solutions: Please upgrade your devices to ZLD5.30 or above.

Release Date: April 29th, 2022

Last Updated: May 24th, 2022

Supported Models: ZyWALL ATP Series/ZyWALL USG FLEX Series/ZyWALL VPN series/USG20(W)-VPN

If you need additional help from Zyxel, you’re welcome to join the discussion on our community.