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💡Duo Security Authentication Integration Guide
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💬 Your Firewall Story Could Earn You $35 Across Two Platforms!
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Secure Start with Zyxel x Tailscale 🎁 Get 6 Months of Tailscale VPN Free, Before Oct.!
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[Trade-Up Program] 🔄 Time to Trade Up: Say Goodbye to Legacy USG, Hello to Next-Level Securi…
Time to Trade Up: Upgrade Your Legacy USG and Unlock a Powerful New Experience.
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Online Security - wife snooping
Hello I suspect my wife is snooping on our wifi router to see what I am searching. Is there a way to see my internet search history on the Zyxel modem Zyxel_DE81, EMG 3525-TSOB?
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DHCP Table
Im looking for a simple or smart way to organize the units thats included in the DHCP Table. As an eg, I would like to put the showned printers in a IP range, I can see them in the list but I cant edit theyres IP adresses to put them in a logic range and then give them static IP addresses. I have seen that I can RESERVE…
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Script per configurazione vpn Ikev2 con atp200
Good morning, the ATP200 wizard for creating an Ikev2 VPN doesn't ask me for which operating system I want to download the script at the end of the configuration. How do I get that script? Thanks.
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Why is AirPlay/Print not supported?
Perhaps I have overlooked it, but I cannot find a way to activate an mDNS reflector in USG Flex 50H. It looks like a very common usecase to have trusted devices in one VLAN and unsecure devices like printers, TVs, … in another VLAN. Could it be that ZyXEL does not support this option - and if not, why? Or it there any…
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IPv6 with pppoe
Hi I have an USG100, and got from the ISP following addresses. WAN: 2001.aaaa.b.cccc/64 and for LAN: 2001.aaaa.dddd/48 If I configure only the wan1_ppp with SLAAC, I get a valid ip and I can ping6 within the USG diagnostic as long the LAN interface is inactive. But if I activate the LAN interface the ping6 shows…
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How can the SecuExtender configuration be remotely updated?
Hi all Given the occasional CVEs affecting SSL connections to the firewalls in many device brands, it is probably not recommendable to permanently maintain SSL services up and running on the firewalls. I have the current issue- clients forget to synchronise their notebooks when in local LAN with the latest configurations…
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Zywall ATP700 startup-conf.conf file transfert to another device
Hiya, I have 2 Zywall ATP700, I would like to import the configuration file from one device to another. I have tried via the GUI and FTP but the file doesn't appear after the upload. Thanks for your help.
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Please can you document the IP addresses we should whitelist for this feature
Specifically the authentication proxy port. SSLVPN authentication with Microsoft Entra ID — Zyxel Community Thank you
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SecuExtender VPN Client
Bonjour, J'ai téléchargé SecuExtender VPN Client (7.7.50.008), je lance, et tout de suite, j'ai cette fenêtre: Si quelqu'un sait… Merci L.
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Bridge DNS forwarding problem
VPN300 V5.37(ABFC.2) USG FLEX 200 V5.41(ABUI.0) So I think sadly nothing can be likely done for the VPN300 thats EOL but I might be able to workaround that but the problem happens on FLEX 200 so I be thankful if this could be fixed. The issue I'm seeing is I have a bind server with WAN IP does lookup from root servers you…
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USG Flex 200 blocking website?
Hello, can a USG Flex200 suddenly block a website resulting in browsertext: "Access denied" ? There is no other text in the browser. I can´t find anyting in the log. There is no problem accessing the site from other connections. It´s also possible to access the site site directly in the fiberbox (on other public IP via…
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SecuReporter for ATP series - missing options in reports
Hello everyone, when I add an ATP to my SecuReporter I see that I miss some options in reports: This is strange because I have the Gold Security Pack: Is this a bug? How can I fix that?
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General rule possible to allow IPSec VPN traffic only, from everywhere? I am also using GeoIP
Hello, I have the newest firmware installed on a USG20W-VPN and regularly update the GeoIP database on the firewall. I use only IPSec VPNs, with SecuExtender client from MacOS and Win11, native IPSec VPN from iPhone, and Strongswan IPSec VPN from Android. All works- so far so good. It is no rocket science for IPSec VPN: it…
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SSL inspection getting to 2000 concurrent sessions
Hello, Seems to be a bug in Flex USG 100 5.41 firmware. The amount of SSL inspection sessions is getting to 2000 and not lowering even if all the computers are removed from the network. Log file also indicates max amount is reached and sessions are passed through. Rebooting USG removes the issue and SSL session statistics…
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Need old FW for ZyWall 110
Trying to upgrade my ZyWall from v4.11 to v4.73 and need to install every FW in between from 4.20 on up. I can only download v4.73 from the myZyxel site. haven't been able to connect to the ftp site, although it seems like it might have been taken down. I see some notes about mirrors, but honestly, without being able to…
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SSH Public key in ZyXEL FLEX Series
I want some users to be able to temporarily disable firewall rules through cli commands, sent by Putty. This works with batchfile where I send password in plaintext with. This is not safe enough, so I want to put public SSH key in firewall, so they don't need the password. With switches it is possible, but I don't see it…
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Tailscale Question?
Greetings! I was looking into a VPN solution and stumbled onto this: https://mysupport.zyxel.com/hc/en-us/articles/28559967649938-Zyxel-Firewall-H-Series-Tailscale-VPN Could I just install Tailscale on the server and client and achieve the same result? If so, how does the Firewall help? I apologize if this may be a dumb…
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What are the main reasons for replacing a usg40-Firewall with a tyxel Flex 100
We still still use a usg40 firewall (behind a DSL modem) to filter and block incoming traffic into our office network, constisting of 12 PCs.. What are the main reasons why we should migrate to a Zyxel FLEX 100? Is the migration using the migration tool simple enough, that a normal windows IT Admin can perform it, or do…
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When an updated firmware for Flex100H updating Tailscale - Security Vulnerability
The current firmware release for the USG FLEX 100H is V1.36(ABXF.0) released on the 20th October 2025. This contains a version of Tailscale that is know to have a significant security vulnerabilities, making it unsafe to use. That version (1.82.0-3) of Tailscale client is now very old and the current version is 1.92.3.…
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USG Flex 200 - Cannot sign in via web...
I have a Flex 200 for a few years now. It is not monitored by Nebula, I just keep it local. I can log into the switch via console or FTP, but I cannot log in via web. I even reset my admin password to default, but no luck via web. Any suggestions?
