ATP 500 and Web Gui unusable

Ceccus
Ceccus Posts: 38  Freshman Member
First Comment Friend Collector Fifth Anniversary
in Security

I have an ATP 500 that is not directly exposed on the Internet.
Since this morning I can no longer reach the configuration web interface. It remains loading with Firmware 5.39 ABFU 1. And even some sites no longer load correctly.
Restoring the previous firmware version (5.39 ABFU 0) everything is OK.
To restore I used ‘debug mode’ by running the commands :

atcd 1
atgo

Probably an ATP200 alreo also has the same problem (but I will check this tonight)
Has anyone had the same problem?

Thank you and best regards

David

All Replies

  • ESupport
    ESupport Posts: 23  Freshman Member
    First Comment Friend Collector Third Anniversary
    edited January 24

    Hi,

    we had the same issue. Only now there is this post https://support.zyxel.eu/hc/en-us/articles/24159250192658-Firewall-Not-reachable-or-unresponsible-or-unable-to-boot-up .

    We upgrade only one partition in case the new version has any problems. How do i know which is the backuppartition? Trial and error is the answer. Had a Flex and 2 ATPs for now.

    Will there be an Signatureupdate that fixes this error or have i to recover any Box thats not reachable anymore?

  • BCC
    BCC Posts: 12  Freshman Member
    First Comment Friend Collector Seventh Anniversary

    I would recommend to temporarily disable App Patrol scheduled definition download until we know Zyxel removed bad definition. Your fixed devices will pull it again and go into the same unresponsive/rebooting loop.

  • Ceccus
    Ceccus Posts: 38  Freshman Member
    First Comment Friend Collector Fifth Anniversary

    Hi,

    Thank you for your answers.
    I'll check the signature updates ... thanks
    With the newer Firmware it worked until last night.

    David

  • Ceccus
    Ceccus Posts: 38  Freshman Member
    First Comment Friend Collector Fifth Anniversary

    Hi,

    Thank you for your answers.
    Updating all signatures (including APP Patrol) with the old Firmware (5.39 ABFU 0) continues to work.

    Regards

    David

  • Ceccus
    Ceccus Posts: 38  Freshman Member
    First Comment Friend Collector Fifth Anniversary

    Hi,
    this is one of the errors (Zyxel ATP 200) Firmware 5.39 ABFU 1)

    ZYXEL_ERROR.png

    David

  • Ceccus
    Ceccus Posts: 38  Freshman Member
    First Comment Friend Collector Fifth Anniversary

    Hi,

    Is this the ultimate solution?

    https://support.zyxel.eu/hc/en-us/articles/24159250192658-USG-FLEX-ATP-Series-Recovery-Steps-for-Application-Signature-Issue-on-January-24th

    David

  • Zyxel_Judy
    Zyxel_Judy Posts: 1,786  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula

    Hi users,

    You can find the step-by-step guide at the following link:

    Recovery Steps for USG FLEX/ATP Series Application Patrol Signature Issue (Jan. 2025) — Zyxel Community

    We hope this guide will help you resolve the issue quickly and minimize any further disruptions. If you continue to encounter difficulties or need additional support, please do not hesitate to reach out to our support team at cso_security@zyxel.com.tw or leave the detail comment here with your region(country), model information (S/N) and contact info. We'd like to have contact with you to assist and resolve the issue caused by the signature incident.

    Thank you for your understanding and continued support.

  • Ceccus
    Ceccus Posts: 38  Freshman Member
    First Comment Friend Collector Fifth Anniversary

    Hi,

    Still the same problem?
    I have restored to the old firmware version and everything works again.
    But what's going on?

    D.

  • Zyxel_Melen
    Zyxel_Melen Posts: 2,745  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate

    Hi @Ceccus,

    Restoring to the old firmware version doesn't delete the issue signature. Please follow the FAQ to upgrade the date code firmware, which will delete the issue signature.

    Recovery Steps for USG FLEX/ATP Series Application Patrol Signature Issue (Jan. 2025) — Zyxel Community

    We hope this guide will help you resolve the issue quickly and minimize any further disruptions. If you continue to encounter difficulties or need additional support, please do not hesitate to reach out to our support team at cso_security@zyxel.com.tw or leave a detailed comment here with your region(country), model information (S/N), and contact info. We'd like to have contact with you to assist and resolve the issue caused by the signature incident.

    Zyxel Melen


  • Ceccus
    Ceccus Posts: 38  Freshman Member
    First Comment Friend Collector Fifth Anniversary

    Hi,

    Restoring from the old firmware (the one you made available) solves the problem. After that you need to update the signatures again.
    I 've had to do it 2 times because the Patrol APP signatures were again not usable and were messing up the machine.
    I have been a customer of yours for over 15 years but this just won't do.

    D.

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