A question about ebtables and virtual switching

[carlopmart <carlopmart@gmail.com>]

Hi all,

  I have installed a virtual machine with snort to sniff traffic on a 
dedicated virtual lan.

  But exists a problem: this snort vm only sees traffic destinated to 
its own MAC address and traffic with the multicast bit set in the 
destination address. This scenario is unusable for snot.

  I have found a partial soultion: set ageing to 0 in host's bridge but 
this produces another problem, all vms attached to this virtual switch 
sees all traffic, and that is not what I want.

  If I not wrong, ebtables is the solution to make snort work, but I 
didn't find any doc about how can I implement this solution.

  How can I configure ebtables rules to make a port mirroring in this 
virtual switch where snort needs to sniff??

  I am using KVM as virtualization platform.

  Thanks.
-- 
CL Martinez
carlopmart {at} gmail {d0t} com