I recently upgraded my server to Ubuntu 18.04.5 LTS from 16.04.7 LTS and in Ispconfig I see notification:
Enable UA Infra: ESM to receive additional future security updates.
See https://ubuntu.com/esm or run:
sudo ua status
Also when I try to get update from console I see the same notification, today I updated some packages, so updates works, is this normal or I did something wrong?