Access Firewall USG20W

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Samm
Samm Posts: 8
First Comment

Good morning engineers,

can you help me with this problem. Today I can't connect to the firewall via public IP. I am entering correct username and password. I can't even log in through ssh.

Before I could do it and now I can't. any idea how to fix it.

regards

All Replies

  • Zyxel_Cooldia
    Zyxel_Cooldia Posts: 1,483  Zyxel Employee
    First Anniversary 10 Comments Friend Collector First Answer
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    Hi @Samm,

    Please try to attach serial console or access device WEB GUI by lan IP address.

    Let's check if web gui or serial console is able to access to perform further debug.

    Want a FREE Access Point? Participate in our campaign and share your network setup for a chance to win! https://bit.ly/3z9MJPB

  • Samm
    Samm Posts: 8
    First Comment
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    Hi than´ks for you answer.
    reboot the device and let enter. but after to restart i don´t see logs for investigate what happen.

    thank you very much

    regards,

    Samm

  • Samm
    Samm Posts: 8
    First Comment
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    What I found is that there are several attempts to connect to the firewall through the public IP.

    I am new to ZYXEL, I ask: could the equipment enter protection mode when receiving several failed connections and block the management of the equipment?

    local navigation everything is fine. Only again I don't have access to the firewall administration. I have to reboot the firewall to get in.

  • PeterUK
    PeterUK Posts: 2,959  Guru Member
    Community MVP First Anniversary 10 Comments Friend Collector
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    unplug from WAN to login and update firmware

  • Zyxel_Jeff
    Zyxel_Jeff Posts: 1,129  Zyxel Employee
    First Anniversary 10 Comments Friend Collector First Answer
    edited May 2023
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    Hi @Samm

    Thanks for reporting this case to us. We suggest the following steps to recover your service:

    Step 1: Disconnect the WAN port connection and reboot your device.

    Step 2: Access the device's Web-GUI using the LAN port.

    Step 3: Update the firmware to our latest version, V5.36P2.

    You can download the firmware from this link:

    Thank you.

  • Samm
    Samm Posts: 8
    First Comment
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    Hi PeperUK

    When upgrading the equipment, do I lose all current settings?

    I ask: the equipment is about 150 kilometers from where I am,
    I manage the equipment remotely, through the public IP.

    I want to be sure that I don't lose management when restarting?

    if you share me the steaps for to upgrade I would appreciate

    regards,

    Samm

  • PeterUK
    PeterUK Posts: 2,959  Guru Member
    Community MVP First Anniversary 10 Comments Friend Collector
    edited May 2023
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    It would be best then to login and add a block rule for VPN services to Zywall then reboot

    log in and update the standby firmware if you can your config should be copied over on upgrade then you will reboot with new firmware and your config.

    If your firmware on standby is old and will not let you upgrade it ask for older firmware to bring it up to current.

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