Can't login to ZyWall 310 via web console

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SMarkG
SMarkG Posts: 14
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edited September 2021 in Security
I have a ZyWall 310 and can no longer login using the web console. When I try I get a message to say "Simultaneous admin/access logons or users have reached the maximum number". 

It appears a previous login was not logged out correctly and I suspect the 'idle timeout' setting has been disabled by mistake which means it isn't going to timeout. Only a single admin login is allowed.

So I am stuck, there is an admin session still logged in but it isn't going to timeout and further simultaneous admin logins are not allowed.

How can I clear this login to allow me to login? I have tried rebooting the unit but it made no difference. Can it be done from the CLI? I can see commands in the CLI reference to modify the idle timeout, simultaneous logins and to display and to force-logout users. But will I be able to connect using the CLI via a serial connection to the console with the same admin account even though it is still logged in?

Thanks for your help.

Accepted Solution

  • Zyxel_Stanley
    Zyxel_Stanley Posts: 1,366  Zyxel Employee
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    Answer ✓
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    Hi @SMarkG
    You can try to use CLI command to force logout users those doesn't in use.
    (1) Router(config)# show users all
    It can list all of users those logged in your device.
    (2) Router(config)# users force-logout ip XX.XX.XX.XX
    It can force logout the account by specific IP address.

    The reason should come from you has Limit the number of simultaneous logons for administration account so caused the symptom.


    Or you can use CLI command to create a new admin account.
    Then you can login to device by new account without problem.
    Router(config)# username adminAAA password XXXXX user-type admin
    Router(config)# write

All Replies

  • Zyxel_Stanley
    Zyxel_Stanley Posts: 1,366  Zyxel Employee
    First Anniversary 10 Comments Friend Collector First Answer
    Answer ✓
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    Hi @SMarkG
    You can try to use CLI command to force logout users those doesn't in use.
    (1) Router(config)# show users all
    It can list all of users those logged in your device.
    (2) Router(config)# users force-logout ip XX.XX.XX.XX
    It can force logout the account by specific IP address.

    The reason should come from you has Limit the number of simultaneous logons for administration account so caused the symptom.


    Or you can use CLI command to create a new admin account.
    Then you can login to device by new account without problem.
    Router(config)# username adminAAA password XXXXX user-type admin
    Router(config)# write
  • SMarkG
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    Thank you very much. I had never used the CLI before so this helped a lot. I connected and used the force-logout to remove the logged in user. It worked perfectly, I have now logged into the web console as normal and set the 'simultaneous logons' and 'idle timeout' settings correctly.
  • Zyxel_Stanley
    Zyxel_Stanley Posts: 1,366  Zyxel Employee
    First Anniversary 10 Comments Friend Collector First Answer
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    Hi @SMarkG
    It's good to know it helped your question. :)

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