Started off by
- Enabling unattended updates
- Enable only ssh login with key
- Create user with sudo privileges
- Disable root login
- Enable ufw with necessary ports
- Disable ping
- Change ssh default port 21 to something else.
Got the ideas from networkchuck
Did this on the proxmox host as well as all VMs.
Any suggestions?
My homelab is in my garage - the storage array is the only thing I care about not losing so using ZFS encryption and Clevis + tang so it needs to be on the home network and able to contact the server to get the decryption keys.