No it's not. Since you run a PVE host on an EOL system there might be some (known or unknown) exploit which would enable an attacker to break out from an container or vm to shutdown your firewall guest or access it from the host.
Your best...
I was quite alarmed to read this this morning. I have a V 7 and a load of old guests. And another running the latest version 9 that I'm migrating to. I'm just a single developer So it's quite time consuming. What constitutes connected to the...
My sole intention in making this post is to report something that's happening to all Proxmox VE 7 systems exposed to the internet, since there's a zero-day vulnerability in the wild. I'm aware of the "danger" of exposing Proxmox to the internet...