Firewall rules on proxmox host, aplicable for KVM instances?

FlorinMarian

Well-Known Member
Nov 13, 2017
90
4
48
30
Hi!

Before explaining what I want to achieve, there is my configuration:
- OVH Game server
- 16 failover IPs
- KVM virtualization, multiple operating systems installed.

Now, the goal.
I have some troubles with someone who can bypass OVH firewall using Fake IPs + Fake UDP packets and fullfill my NIC card, using whole bandwidth, affecting all KVM instances at once.
What I would like to know, if it it's possible to filter this kind of attack at Proxmox Node level or on each instance, if not working at Node level.
Thank you!