Ubuntu Server Device Name

[techlists at phpcoderusa.com]

Hi,

I am in the process of installing Ubuntu server 24.04 as a guest using 
VirtualBox on Win 10. To do so I have to deactivate my access control 
list on my router.

This guest is in the initial process of being configured.  I an on the 
very first question that is about the keyboard.

I am looking at my firewall and is showing it has a device name of 
"UBUNTU-SERVER".  It has an IP that I assume was provided by the router 
(dhcp).

Where does this device name of "UBUNTU-SERVER" come from?  I assumed in 
the past this was the hostname.

In the past when I have configured a guest using Ubuntu 24.04 server, 
after completing the install, the device name in my router says 
"UNKNOWN".  It does not show the hostname.

Any thoughts?

Thanks!!
Keith