It's probably systemd-journal-gatewayd (https://www.freedesktop.org/software/systemd/man/systemd-journal-gatewayd.service.html https://www.freedesktop.org/softw

It's probably systemd-journal-gatewayd (https://www.freedesktop.org/software/systemd/man/systemd-journal-gatewayd.service.html https://www.freedesktop.org/software/systemd/man/systemd-jou...) or systemd-journal-remote (https://www.freedesktop.org/software/systemd/man/systemd-journal-remote.service.html https://www.freedesktop.org/software/systemd/man/systemd-jou...), and I don't think I've ever seen either enabled, by default or otherwise (and at least on this machine, they don't even seem to be installed; they might be on another package, or they might not be compiled by default).