Haven't seen any mention about preventing the newly released SACK attack on Proxmox hosts. Is upgrading the Proxmox server enough to cover the VM's or do they need to all be upgraded as well?
Would an IP Tables solution like the following protect all VM's on the host machine...
I see the file /etc/pve/vzdump.cron has that in there, and another backup line without the --fullbackup option and it works, but it doesn't appear to be running that one. Just the errored one because backups are not running. Is this the file I need to modify? Or is it stored somewhere else as well?
I had backups working forever, now all of the sudden something changed and even when I try to run from command line its broken... I understand the error message, so obviously the command line switches changed. Not sure why the built in system isn't working though?
Unknown option: fullbackup...
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