a VM to monitor traffic

[greg]

Greetings

I want to set up a VM to monitor incoming traffic (with maltrail), some kind of "promisc" mode.
I use iptables to firewall / forward traffic to my VMs.

Does anyone knows how to set up iptables so that this particular CT can see all incoming traffic?

Thanks in advance

greg

 

[Richard Leishman]

We use ntop, installed on each proxmox node and then we use a NetFlow/sFlow collector.

We also use PRTG to monitor the uptime of all our nodes, storage and virtual machines using snmp protocol.

PRTG will send us SMS messages if a server goes down or using too much resources.

 

[greg]

Thanks for the anwser.
My question was not about the monitoring software, but the configuration of iptables to have the packets flow to the virtual machine.