On a different host running Ubuntu 18.04 I'm using the Network Manager GUI to configure the 802.1X Security for my Ethernet interface (eth0), leading to /etc/NetworkManager/system-connections having these lines:
[802-1x]
eap=md5;
identity=userid
password=***
Now, clearly Raspbian is not Ubuntu, so there's no Network Manager.
Therefore I wonder how can I do the same on my Raspberry Pi 4 running Raspbian 10 (buster)?