Zyxel VPN100 login problems

Jape

Hi,

I have problem with login tried login webui throught lan and when i entered my credentials it says i need change password

But i can't change it says invalid username/password i think there is problem with format of old password

loginname is xxx@xxx.com and old password contains special chars like $&

change password dialog turns loginname xxx%40xxx.com ← can this be problem or is it password

Do i have right theory or is that something else?

If i am right tracks how i can proceed?

Zyxel_James

Hello @Jape

How about using a serial connection to connect to the firewall?

You can follow the procedure below to bring the username/password back.

1. Connect to the firewall via Console port
2. Reboot the device
3. Notice when "Press any key to enter debug mode within 3 seconds" appears, and enter in the debug mode
4. type "atkz -b"
5. type "atgo" to booting device again.
6. Now the device will reset to system-default configuration and backup the old startup-config.conf to startup-config-back.conf
7. Login to the device after boot up, and download startup-config-back.conf
8. Open startup-config-back.conf and find the below content: username admin encrypted-password $4$encryptedpasswordencryptedpassword$ user-type admin
   In your case, the username could be "xxx%40xxx.com"9.
9. Change it to username admin password yournewpassword user-type admin and save it
10. Upgrade the firmware to 4.73P2 or 536P2
11. Apply startup-config-back.conf to your device after upgrading
    

https://community.zyxel.com/en/discussion/1558/how-to-backup-running-configuration-if-forgot-password

Zyxel_Stanley

May I know the current firmware version running on your firewall? If you're experiencing issues, it might be worth trying the latest firmware version to see if it resolves your problem.

Jape

Version was 5.32 but how can i update without access to firewall?

Can you confirm is there any tips get access firewall or need i reset it and configure from zero?

Zyxel_James

Hello @Jape

How about using a serial connection to connect to the firewall?

You can follow the procedure below to bring the username/password back.

1. Connect to the firewall via Console port
2. Reboot the device
3. Notice when "Press any key to enter debug mode within 3 seconds" appears, and enter in the debug mode
4. type "atkz -b"
5. type "atgo" to booting device again.
6. Now the device will reset to system-default configuration and backup the old startup-config.conf to startup-config-back.conf
7. Login to the device after boot up, and download startup-config-back.conf
8. Open startup-config-back.conf and find the below content: username admin encrypted-password $4$encryptedpasswordencryptedpassword$ user-type admin
   In your case, the username could be "xxx%40xxx.com"9.
9. Change it to username admin password yournewpassword user-type admin and save it
10. Upgrade the firmware to 4.73P2 or 536P2
11. Apply startup-config-back.conf to your device after upgrading
    

https://community.zyxel.com/en/discussion/1558/how-to-backup-running-configuration-if-forgot-password

Jape

I don't have physical access to device so i will go hard way resetting and setuping routing again and after that upgrade firmware and setup settings from backup file. Anyway thanks for help