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?
Cloudflare and whitelist CF ips, they publish a file
This is ofc to redirect the traffic the services that are on the cloud.
And those services reside on a separate VLAN and have their own reverse proxy on their own VM/docker whatever.