Just for your information (might be useful to others): I suddenly had a hell of a time trying to log-in into the web interface of my ZyWALL 110.
When logging in I got the message "As a security precaution, it is required to change your password".
Apparently this is a new feature since the latest firmware update, that has been enabled and set to come up after 180 days by default.
So it must have been 180 days since I updated the firmware.
This is a good security measure in itself, but it would be better if this was communicated more clear: at least I was not aware of this change.
Anyhow, the problems started when I tried to change the password through the login screen: the new password was not accepted, and I got the message "Invalid username or password".
I am 100% sure that this new password was in accordance with the complexity rules as defined in the ZyXEL manual.
But I tried it several times with different new passwords, all of which should fulfill the password complexity rules, but got the same message every time, and after five attempts I was locked out.
So I was already afraid I had to reset my Z110 and start from scratch.
But then I tried to log-in via a CLI connection, and luckily I was able to log-in (still using the old password).
So I created a new admin user through the CLI, using these commands:
Router> configure terminal
Router(config)# username password user-type admin
With this new user I could log-in into the web interface, and modify the password of the old admin user via "Object -> User/Group".
After that I also could log-in again with the old user.
So all fine in the end, but it was a frustrating experience...
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