Securing the OS (SSH)

Securing the operating system is always needed to prevent unauthorized access to the Unipi units. Using a non-secured OS may lead to unauthorized tampering that can stop or limit the system's operation. In the worst-case scenario, it may also cause damage to the connected technologies or endanger personnel on the installation site.

For these reasons, it is important to properly secure the system each time a new project is created. Alternatively, you can disable the SSH access completely.


As the connection is provided by the SSH protocol, it is necessary to know the IP address or the mDNS address of the device and have an SSH client installed on your PC or tablet. Among the most frequently used clients for Windows OS is the PuTTY application - user guide and default passwords are available here.

As a next step, enter the following command:

sudo passwd

A prompt to enter and confirm a new password will be displayed. If everything is set correctly, the following message will appear:

passwd: password updated successfully

The entire process is depicted below (the password is not visible during its entering):

unipi@S103-sn999:~$ sudo passwd
New password:
Retype new password:
passwd: password updated successfully


Was the password change unsuccessful?
If the password change fails, the following message will appear:

passwd: Authentication token manipulation error
passwd: password unchanged

To solve this issue, try to enter the command below and then repeat the password change process.

sudo mount -rw -o remount /

If the password cannot be changed even after entering the command, please contact our technical support.