We are about to build a Cluster with PVE yet have a few queries regarding server and data security. Server Security Does ProxMox Firewall conflict with OSSEC? If ProxMox Firewall and OSSEC do not conflict, then what one processes first? And whether they conflict or not, would it be better to disable ProxMox Firewall and run the OSSEC in Active Response Mode with it's default rules on both the host server/s and server cluster? Data Security Is data relay between a server cluster's nodes encrypted? If so, how is it encrypted? If not, how can we encrypt it? eg: forced SSL on host servers, CephFS or ZFS encryption on the server cluster?