KNOWLEDGE BASE
Platform and Solutions
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MyZyxel
- My Zyxel Portal [Account] - How to change name, email, password, email notifications, and other settings on MyZyxel portal ?
- Stay Updated with Zyxel: Subscribe to New Firmware Notifications via Zyxel Community
- USG FLEX H series - Introduction of the Entry Defense Pack for USG FLEX H Series
- Zyxel Account [MyZyxelPortal] - Account Deletion Process with your MyZyxel Account
- Zyxel Community [MyZyxelPortal] - Get New Firmware Release Notifications
- Zyxel License Finder [MyZyxelPortal] - Find the correct license for your Firewall, Nebula, Gateway or Switch See all 14 articles
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Circle
- Zyxel Circle [License platform] - The New Zyxel License Platform Overview
- Zyxel Circle [License platform] - Dashboard Overview
- Zyxel Circle [License platform] - How to Managing Licenses
- Zyxel Circle [License platform] - How to Remove Devices from My Zyxel Circle Account
- Zyxel Circle [License platform] - Onboarding Your Devices
Cybersecurity
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Legacy Series
- Legacy USG - How to configure BWM (QoS) and BWM for VoIP
- USG40W: 5GHz not working
- IPSec Client - My IPSEC tunnel won´t open on Windows 10!
- VPN - Configure L2TP over IPSec for Windows, MacOS X & iPhone iOS
- VPN - Configure L2TP VPN with Certificate on Windows 10
- How to configure IKEv2 with MS-CHAPv2 on ZyWALL? See all 30 articles
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ATP / USG FLEX Series
- How to configure the 3G/LTE Interface on the ZyWALL/USG as a WAN Backup?
- IKEv2 DNS Workaround iOS
- Importing and using third-party certificates on a Firewall
- How to Set Up IPv6 Interfaces for Pure IPv6 Routing
- Firewall - SSH access from the internet (WAN) - what to look after?
- WAN Failover via trunk of a USG See all 209 articles
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USG FLEX H Series
Wireless (WiFi)
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NWA Series
- Access Point [NWA50/55AXEE/90AX/110AX/210AX] - Differences in Hardware and Features
- Access Points [NWA/WAX] - Reset Button and Device Reset
- Next-Generation Wireless [WI-FI7] - Unlocking the Potential of WI-FI 7 technology with the new Zyxel Access Point NWA 130 BE
- NWA55AXE Installation requires some patience - device does not seem to go online
- WBE660S WIFI7 [Access Point] - Peculiarities of Smart Mash and ZyMesh operation
- Zyxel NWA130BE [AP] - Comparison of NWA130BE and WBE660S
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5x / 6x Series
- Access Point - Recover a bricked AP via TFTP Firmware Recovery
- Access Point - What is DFS [Dynamic Frequency Selection]
- Access Point [NWA/WAC/NAP/WAX] - Which access point should I use ?
- Access Point [Stand-alone mode] - AP First Setup & Configure an SSID (WiFi) and Guest WIFI
- Access Point: IDLE states
- Access Points [Wireless] - maximum number of users that can be connected to Zyxel Wi-Fi Access Points See all 38 articles
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Wireless Controller
- "This is not a secure connection"- Warning on a Web GUI / VPN 2FA / Captive Portal System
- Access Point (Controller-based) - What is tunnel mode & Tunnel Mode Support on NXCs
- AD (active directory) user authenticate check
- AP Controller - Change Access Points managed by an NXC-controller to your Firewall
- Auto Healing feature - Explain how it works
- Captive Portal [External/Internal Portal Page] - Customizing the HTML page of the external portal for the developer See all 26 articles
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FAQ Express
- How to enable or disable Intra-BSS
- How to enable or disable layer-2 isolation
- What is the differences between Intra-BSS Traffic Blocking and Layer-2 Isolation
- Which Access Points Are Supported by Different Zyxel AP Controller Models?
- Zyxel AP Event Log Guide: Interpreting Reason Codes and Descriptions
- Zyxel WLAN [AP] - default password on Zyxel access points See all 9 articles
Nebula (Network Management)
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Mobile APP
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NCC (Nebula Control Center)
- Nebula - Invite Zyxel as Nebula Admin [Support Request]
- Understanding NebulaFlex-Mode
- Nebula [Authentication] - MAC-based Authentication for Wireless Network
- WAN Connectivity Check on Nebula Security Gateways (NSG) / USG FLEX in Nebula (WAN Failover)
- Nebula [Information] - How Devices Communicate with NCC & Ports used for NETCONF
- Nebula - Device cannot get online / has connection issues [offline issue] See all 48 articles
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Firewall / Cybersecurity
- Nebula [VPN] - Site-to-Site VPN to Non-Nebula-Peer is disconnecting frequently [Connectivity Check]
- Nebula CC - Configure NAT Rule on your firewall(Port Forwarding)
- Nebula [Authentication] - Captive Portal Setup on a Firewall [Nebula Security Gateway]
- Nebula VPN - Configure Site-to-Site VPN to a Non-Nebula-Peer
- Nebula [NAT] - Configure NAT Loopback Feature
- Nebula [Guest WiFi] - Configure Guest WiFi with Layer 2 isolation See all 40 articles
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Switch
- Nebula - Configure Voice VLAN on your Network Switch
- Nebula - How to configure and use Vendor ID based VLAN
- Nebula - How to protect your network devices using Nebula Switches?
- Nebula - Layer 3 [L3] Switching (Licensing & Configuring)
- Nebula - Problems getting DAC cables to running on my Nebula Switch [e.g. XGS1930]
- Nebula CC - Configure Switch Stacking See all 19 articles
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Wireless (WiFi)
- Can I connect a standalone repeater to a Nebula managed AP via WDS?
- How to Configure Smart Mesh in Nebula – Setup, Monitoring, and Troubleshooting
- How to enable or disable NAT-Mode
- How to Set Up a Wireless Bridge in Nebula – Root and Repeater AP Configuration
- Nebula - Access Point [AP] Log Messages
- Nebula - Configure Captive Portal via SSID See all 21 articles
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FAQ Express
- Zyxel does not accept the default password after reset — what’s the reason and how to regain access?
- [FAQ-E] - Functionality During Cloud Outage – What Still Works When Nebula is Temporarily Unreachable
- [FAQ-E] - Nebula Site Limitations or How Many Devices Can You Add to One Site in Nebula?
- [FAQ-E] - Reliability & Recovery – FAQs on Data Backup, Service Continuity, and Incident Response
- [FAQ-E] - Security & Access Control – Frequently Asked Questions about Nebula Platform Security and Staff Access
- [FAQ-E] - Zyxel Nebula Maximum Number of Sites per Organization
Security Appliances and Services
Switch
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Desktop Series
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GPON / XPON/ DSLAM
- Automatic deactivation of ADSL ports
- Description of the optical connectors SC / APC and SC / UPC used in GPON devices
- Explore our GPON/XPON Solutions!
- How does the IES5206 work with ADSL2+ bonding?
- Pin Assignment of Telco 50 Connector Used in Different ZyXEL XDSL Switches
- Setting up an GPON OLT2406 See all 12 articles
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Management Switch
- Bootloop when importing custom certificate on switch
- Differences between Switch models in series GS1100 and GS1900 versions
- Does Zyxel enterprise managed switches support Jumbo frames?
- Enable functions on Metro Ethernet Switch series via CLI (MESxxx, MGSxxx)
- GS1200/XGS1210/XGS1250 - Configure Basic Setup, VLAN, LAG, Firmware Upgrade
- GS1350 - Cloud Mode with Smart Managed Switch for Surveillance See all 54 articles
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PoE
- GS1350 "Surveillance" Switches - 802.3bt / Auto PD Recovery / Continuous PoE
- GS1350 Series - Enabling PoE Extended Range
- GS1300 "Surveillance" Unmanaged Switch Series - Enabling PoE Extended Range PoE
- RGS200-12P / RGS100-5P: How to connect RGS to a power module
- Network Switch - Schedule PoE Time Ranges for Ports (Time-controlled)
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Security in Switching
- How to configure MAC filter to block unwanted traffic
- MAC Pinning feature in ZyXEL Ethernet Switches
- Network Switch - Configure Anti-ARP Scan [to prevent IP scanning]
- Network Switch - Configure Port Security to limit the number of connected devices
- Switch - Configure Broadcast Storm Control [Stand-alone mode]
- Switch - Configure DHCP Snooping See all 9 articles
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Stacking
- What is hardware stacking on a switch?
- Switch - Configure Stacking [High Server Availability]
- How to setup link aggregation between a stand-alone switch and switch in stacking mode
- Switch Redundancy / HA / Stacking system Overview
- Basic setup Redundancy / HA / Stacking
- Firmware Upgrade for a Stacking System
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RSTP (Spanning Tree)
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Multicast / IGMP
- Network Switch - Switch not sending IGMP General Query when setting IGMP Snooping for a fixed VLAN?
- Network Switch [IGMP] - Configure IGMP Multicast Routing [Clients in the Same LAN]
- Network Switch [IGMP] - Configure IGMP Multicast Routing [Clients in a Different LAN]
- Network Switch - How to block Multicast in your Network
- Networked AV Mode - ATEN Partnership
- Switch - AVoIP Network Configuration Guide for Dante
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FAQ Express
Nebula
Management and Monitoring
Warranty & Services
Home
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General
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WiFi Adapters
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Cloud Access Cameras
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Wireless Extenders
- [Repeater] How do I recover the software/firmware on a WRE2205 (v1/v2)?
- [Repeater] How to backup/restore/reset the WAP3205 v3 configuration
- [Repeater] How to upgrade the WAP3205 v3 firmware
- [Repeater] How to set the WAP3205 v3 system time
- [Repeater] How to change the WAP3205 v3 administrator password
- [Repeater] How to change the WAP3205 v3 IP address See all 12 articles
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Personal Cloud Storage
- [NSA/NAS] Access NAS from anywhere using WebDAV on macOS
- [NAS/NSA] How to configure a static (manual) IP address
- [NSA/NAS] Disclaimer about current firmware patch pertaining to CVE-2020-9054
- [NSA/NAS] How to map/mount a network drive on macOS
- [NSA/NAS] How to fix certificate error on browser when accessing NAS WebUI
- [NSA/NAS] How to create a user group on NAS See all 13 articles
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Powerline and Adapters
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Home Routers
- [Router] How to do the initial setup of the NBG-419N (First Time Setup)
- [Router] How to configure port forwarding (NAT) on the NBG-419N
- [Router] How to configure the NBG-41xN for initial installation (First Time Setup)
- [Router] [Repeater] How to configure the NBG-41xN as a wireless repeater
- [Router] [Repeater] How to configure the NBG-41xN to act/behave like a wireless client
- NBG6816: Guest Wi-Fi (Armor-Z1) See all 11 articles
Business
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General
- VPN Guidelines - Choosing the right VPN-type for your Home-Office
- [ZLD] Zyxel security advisory for vulnerabilities of CloudCNM SecuManager
- [MyZyxel] [Nebula] How to activate MyZyxel/Nebula Two-Factor Authentication (2FA)
- [FAQ] Unable to delete user account "Error Message: 'User in use.'"
- [FAQ] Does my Zyxel router include VPN licenses?
- [FAQ] When I login to the WebUI, the status screen gets stuck loading. How can this be fixed? See all 44 articles
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Hotspot Gateways
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WLAN APs and Controllers
- [FAQ] What are the maximum association number and recommended concurrent station number for each AP?
- IEEE 802.11 De-Authentication/Association Codes and Clauses
- [AP] How to configure a Guest Wi-Fi using VLAN
- [AP] How to configure a Guest Wi-Fi using layer-2 isolation
- [WIFI] Recommendations on how to detect rogue APs on the network/environment
- [AP] What PoE standard do the access points support See all 9 articles
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Switches
- [Switch] How to configure VLANs on the GS22xx series switches
- [Switch] PoE Details
- [Switch] How to configure the IP address on a GS1900-xx switch (firmware 2.40 and newer)
- [Switch] How to configure the IP address on a GS1900-xx switch (firmware 1.00 to 2.30)
- [Switch] How to configure VLAN on GS1900-xx switches (firmware 2.40 and newer)
- [Switch] How to configure VLAN on GS1900-xx switches (firmware 1.00 to 2.30)
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Security Firewalls
- [ATP/VPN/USG FLEX] How to configure bandwidth management
- [ATP/VPN/USG FLEX] How to configure address mapping (1:1 NAT) on security gateway
- [ZyWALL/USG] How to configure a Client-to-Site VPN connection and use VPN Provisioning on Zyxel IPSec VPN Client
- [FAQ] How to set up a scheduled script (*.zysh) process on ZLD appliances
- [ZLD] Configuring Email-to-SMS service for 2FA (Two-Factor Authentication)
- [ZyWALL/USG] How to configure Content Filter on Zyxel appliances See all 53 articles
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Nebula Cloud Networking
- [Nebula] Using Nebula Remote Access to Gain Real-time Device Data for Network Troubleshooting
- [Nebula] Recommended CLI commands for troubleshooting
- [Software] Zyxel IPSec VPN Client setup for NebulaCC IPSec remote access VPN
- [Software] IPSecuritas setup for NebulaCC IPSec remote access VPN
- [Nebula] How to register NebulaFlex access points with service
- [Nebula] How to deregister/unregister NebulaFlex access points from service See all 8 articles
Service Provider
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WiFi System
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MSANs / DSLAMs
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DSL CPE
- [CPE] How to bridge the VMG appliance to function as a modem only
- [CPE] How to configure Wi-Fi settings on P-660HN-51
- [CPE] How to configure port forwarding (NAT) on the P-660HN-51
- [CPE] How to change the LAN IP address and DHCP server settings on the P-660HN-51
- [CPE] How to configure my ISP broadband, xDSL WAN, settings on P-660HN-51
- [CPE] How to configure the Ethernet WAN on P-660HN-51 See all 24 articles
Popular Help Topics
- Zyxel Device Troubleshooting Guide: Checklists & Common Scenarios Before Contacting Support
- Recovery Steps for USG FLEX/ATP Series Application Patrol Signature Issue (Jan. 2025)
- Zyxel security advisory for multiple buffer overflow vulnerabilities of firewalls - Unstable VPN Connection & Webinterface Login Issues
- USG FLEX / ATP Series - Application Patrol Signature issue of ATP & USG FLEX Series
- Security Vulnerability Alert and Firmware Patches - Firewall Series
- Troubleshooting Nebula Devices that have gone offline
- Activate and Link an additional License to a device via MyZyxel.com
- [FAQ] Where can I download firmware from?
- VPN Guidelines - Choosing the right VPN-type for your Home-Office
- [ZLD] Zyxel security advisory for vulnerabilities of CloudCNM SecuManager
- [MyZyxel] [Nebula] How to activate MyZyxel/Nebula Two-Factor Authentication (2FA)
- [FAQ] Unable to delete user account "Error Message: 'User in use.'"
- [FAQ] Does my Zyxel router include VPN licenses?
- [FAQ] When I login to the WebUI, the status screen gets stuck loading. How can this be fixed?
- [ZLD] Having trouble with PCI Compliance tests for credit card machine. How can the Zyxel appliance settings be enhanced to comply with PCI requirements?
- [Software] How to download and install the latest software version of SecuExtender SSL VPN Client for Windows OS
- [Software] How to download and install the latest software version of SecuExtender SSL VPN Client for macOS
