So I’m relatively new to server hosting. (But experienced with remote web hosting from providers.) After about a year of fighting to run Nextcloud on a hosting company and finally losing everything from the cPanel vulnerability a few months ago, I broke down and launched my own home server. I’m looking for advice to maximize security.
CachyOS Linux with ClamAV Docker via Portainer Nextcloud (E2EE), Immich, DocuSeal and NoteTrace Routed through a domain and subdimains via Zero Trust Cloudflare Tunnel and Cloudflare DNS.
I have regular redundant backups both onsite and offsite with Duplicati.
My passwords for OS and all admin dashboards are extremely long, unique, random strings managed by Bitwarden.
I know just enough about this stuff to get into trouble. What else should I setup? I have little to no monitoring going on and don’t know much about that direction.
I’d use the same baseline approach for logs and compare counts instead of reading lines. Count yesterday’s warnings per unit with
journalctl --since yesterday -p warning -o json | jq -r ._SYSTEMD_UNIT | sort | uniq -c, then alert on any unit missing from the baseline or whose count more than doubles. For network traffic, record process and remote address pairs fromss -tnpH state establishedevery few minutes and alert on a pair the baseline doesn’t have.Drafted with AI.