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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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Radius server on ZyXEL FLEX H with SSL VPN
Recently upgraded to FLEX H series and in same time to WIndows Server 2025. We used to have AD Integration for VPN, so that users could be defined on AD. Classic implementation (TCP389) still works with new FLEX H series combined with SSL and OpenVPN Client. But as we have to move on to Windows Server 2025, classic LDAP on…
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Bug Report / Feature Request — USG FLEX Web UI: 2FA verification field does not accept ENTER key
Summary Inconsistent keyboard behaviour between the login stage and the 2FA verification stage creates a daily usability and security friction point for administrators using standalone mode with 2FA enabled. Current behaviour Step 1 — Username/password screen: ENTER key submits the form correctly. Step 2 — 2FA verification…
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USG flex 200H
Guten Tag Zusammen, Auf der Kunden Firewall wird im VPN Status bei einer Verbindung immer zwei "Tunnels" angezeigt. Auf der Gegenseite ist eine Azure Firewall von Microsoft. Was könnte der Grund sein das auf der USG flex 200H zwei Tunnels angezeigt werden? Danke für Eure Antwort. Hello everyone, On the customer's firewall,…
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When will the USG lite 60AX
get a new firmware?
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problema failover
Buongiorno, ho un USG flex 200 con firmware V5.39(ABUI.1), sono configurate 2 wan: 1 IP statico con un router 5G di backup 2 PPPoE che dovrebbe essere la principale ho seguito questa guida per configurare il failover: https://support.zyxel.eu/hc/it/articles/360005480394-Failover-WAN-tramite-trunk-di-un-USG posto gli…
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Full Cone NAT via FLEX H
Hi, I replaced an ATP200 with a USG FLEX 100 H on a network with a public IP address and a PBX in LAN. Some public ports were mapped via NAT to the internal PBX. With ATP200 was all ok, with FLEX H clients can start VoIP calls, but the voice didn't pass via NAT. PBX Technincian spoke about Full Cone NAT, Restricted Cone…
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FLEX500: Application Patrol: HideMyAss, x-vpn and Psiphon false positives?
Hello, I'm experiencing a strange issue for the last 3-4 weeks as my FLEX500 is logging HideMyAss, x-vpn and Psiphon outgoing connections from many windows 10 and windows 11 lan computers. These connections are vs specific public ips, ports 80 and 443, i.e. : HideMyAss 52.21.115.110 34.111.175.102 34.160.176.28…
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No country ID for this IP
Hi, just noticed this IP which has no country identification to it in SecuReporter, please fix everywhere where needed: Question for my understanding: does SecuReporter use same GeoIP sources as the firewalls themselves? I assume you ask the GeoIP owners for fixes, as many devices update automatically from the same online…
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Captive Portal with USG Flex 100
Dear Zyxel Community Support Team, I am currently configuring a USG FLEX 100 (AP is NWA5123-AC) with a Captive Portal for our guest network (VLAN 10, subnet 10.0.10.0/24). While the portal itself works perfectly when accessed directly via http://10.0.10.1 , automatic redirection for unauthenticated users does not function…
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USG Flex 100, changes in security profiles not saved
Hello, I don't know since when, but my Zyxel USG Flex 100 is not saving any changes to existing security profiles, not at config details and also not of at least the names. Reboot of USG did not help, issue still exists. Current Version: V5.42(ABUH.1) Released Date: 2026-02-08 02:18:35 What is also strange: If I go to…
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Dirty Frag kernel CVEs (CVE-2026-43284 / CVE-2026-43500) - ESP/IPsec path - follow-up to the Copy Fa
Dear Zyxel team There is already a helpful thread on the related Copy Fail vulnerability where a Zyxel employee confirmed the appliance is not practically exposed, since exploitation needs a local unprivileged user to run code and the firewall/AP do not offer that attack surface:…
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تغيير باسورد الشبكه
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native Windows VPN connection KO in the last few days (IPSec IKEv2)
Hello folks! I'm experiencing a total stop of the VPN connection on some Windows 11 clients. It started no more than 2 weeks ago. PROBLEM DESCRIPTION: - when i launch the connection it hangs on "connection in progress" and never connects, nor gives error message - no logs on the firewall - RASMAN service is stopped and i…
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How to prevent the IKE daemon from responding to IKEv1 requests?
Running latest firmware on a USG20W-VPN. All my IPSec clients (SecuExtender on Win11/macOS, native iOS, strongSwan on Android) are IKEv2 only. The VPN gateways are configured as IKEv2 only - the IKE Version radio button is set to IKEv2 and greyed out (as expected). Despite this, the IKE daemon still engages with inbound…
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USG Flex 200 UDP out-of-order frames
Running tests with iPerf3 in UDP mode, I'm seeing very high rate of out-of-order frames reported during download (in on wan, out on lan), with a some but less out-of-order on uploads. Have tested at multiple sites, multiple devices, multiple ISPs. The percentage ramps up way sooner than it should: Download rate…
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delete please '-.-
Sorry, solved issue… please delete/ignore this message
