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It doesn't really seem like a safe solution. you connect to your backup with full access, in case of ransomware or hack you are done. What I think is better is create a docker with ssh and Rsync. Mount folders that you want to backup read-only to the docker. Use a DDNS instead of IP Running the connection over Wireguard. Let the Backup server make the connection and the backup, close the connection after making the backup. Set up the backup server in such a way that it can only be written once and cannot be deleted / modified. Perhaps a Snapshot on the backup server as extra security. And never make one server accessible through another, if you get hacked or hit with ransomware you have 1 big clusterf*ck

Instead of making holes in Unraid isn't it better to do it via SSH? install the virt-manager local ssh -L 8080:127.0.0.1:80 -L 16509:127.0.0.1:16509 <unraiduser>@<UnraidIP> Open virt-manager File -> Add Connection Hypervisor: Custom URI Autoconnect: Checked Custom URI: qemu+tcp://[email protected]:16509/system And you have now a open webUI 127.0.0.1:8080 with no password