Firewal slow down response network time

alebeta

Well-Known Member
Mar 20, 2018
45
3
48
33
gonkar.com
Hello friends,

PVE setup information:
Cluster: 3 nodes
PVE Version: pve-manager/5.2-8
Kernel: 4.15.18-4

Recently I had activated the firewall in my data center, to allow VPS users to be able to set up their own rules. What happened next is that I can notice a slow response of the network recently, and I figured out that is because of the build in proxmox firewall. I check the bandwidth performance with iperf3 and it seems to be fine, but the problem that I have is at the first response, if I tried to ping a VM in proxmox it will wait around 8 seconds before it start replying the ping(it was my test), but also few users told me that recently it had been slow.

I checked nodes resources and they are doing good, also network is ok. and it is happening just when firewall is on.

Any help will be appreciated and if more information is needed to help just let me know.
 

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