Web UI very slow after modification to DNS settings

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Stefanoco
Stefanoco Posts: 7
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edited April 2021 in Security

Using our new ATP200 was fine until I modified DNS settings (added one public DNS service 1.1.1.1). Since applying this modification the web UI became very slow, and now it's unusable. Login takes minutes, and then the UI does not show. Any idea?

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  • Alfonso
    Alfonso Posts: 257  Master Member
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    Hi @Stefanoco


    Welcome to the forum.

    I suggest you provide more information to help you: firmware version, network traces, event logs ...


    Regards

  • Zyxel_Cooldia
    Zyxel_Cooldia Posts: 1,450  Zyxel Employee
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    edited July 2019
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    Hi @Stefanoco

    Welcome to Zyxel Community 😀

    Can you post the screenshot of your DNS settings?

    Also, when the Web GUI became slow, what is the result of CLI “show cpu average”?

    CLI: show cpu average

    image.png


    C:\Users\ZT02546\AppData\Local\Temp\msohtmlclip1\01\clip_image002.jpg


  • Stefanoco
    Stefanoco Posts: 7
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    Hi thanks for answering. Pls find below the DNS setup and hw/fw revision page. Regarding the other data, I must tell that this morning there was a reboot of the firewall and now access to web UI is normal, no more issues. So it might be a glitch due to saving the new configuration. My only concern is that this happens again during modifications. What's your opinion?

    Schermata a 2019-07-08 11-56-08.png


    Schermata a 2019-07-08 11-58-54.png


  • lalaland
    lalaland Posts: 90  Ally Member
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    Will the issue come again if you delete the DNS 1.1.1.1, and add it back again? 😅

  • Stefanoco
    Stefanoco Posts: 7
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    Not sure that I want to try this worktime, perhaps during the weekend...

  • Zyxel_Cooldia
    Zyxel_Cooldia Posts: 1,450  Zyxel Employee
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    Hi @Stefanoco

    Maybe I can help you to test it.😀

    Can you send me your configuration via private message.

  • Stefanoco
    Stefanoco Posts: 7
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    Hi @Zyxel_Cooldia sorry can't share the detailed configuration for security reasons but it seems working correctly for the moment.

  • Zyxel_Cooldia
    Zyxel_Cooldia Posts: 1,450  Zyxel Employee
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    Hi @Stefanoco, okay, let me know if you encounter any issue.😀

  • Stefanoco
    Stefanoco Posts: 7
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    Hi @Zyxel_Cooldia following a few days of observation, I realized now that the Web UI gets very slow down to not responding after a few days of uptime. It seems to me that this is not related to any specific setup but I may be wrong. Reboot solves, and appears again after days. Of course I can't debug while not working unless I connect the console cable.

  • Stefanoco
    Stefanoco Posts: 7
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    Sorry @Zyxel_Cooldia I realized now that I also have SSH access enabled from our LAN so here's the CPU load, any other information you may need from CLI ?



    Schermata a 2019-07-12 11-49-00.png


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