To set up the ASIC Hub you will need to have a secure shell (SSH) access to your ASIC. To establish a SSH access you will need a special software that allows it - one such free software for Windows is PuTTY. For other systems, you can use Termius.
When you download SSH client, connect to the local IP address of your ASIC (you can use the default port 22). SSH client will ask you for your SSH username and password. When you enter them, you will be successfully logined to your ASIC through SSH.
Please note that SSH login is not the same as web login, so if you didn't change your credentials, try using the default options.