[Oisf-users] Suricata - vars and multiple interfaces

Davide Setti d.setti at certego.net
Mon Aug 6 15:40:56 UTC 2018

Hi all,

At the moment I am using suricata to listen from two different network

Each interface receives different traffic, in particular:

   - traffic from clients to proxy
   - traffic from proxy to internet

For this I need to use different configurations for HOME_NET and
EXTERNAL_NET for each interface.
The first should have:

   - HOME_NET = <private address space>
   - EXTERNAL_NET = <proxy-address>

While the second should have:

   - HOME_NET = <private address space>
   - EXTERNAL_NET = <public address space>

However in generated/example suricata.yaml variables are defined only
globally and I would like to have only a single suricata instance running.

Looking at comments in suricata.yaml is it should be possible to define a
different BPF filter for each interface.
Is it possible to define variables on interface basis or any interface
specific override?

Davide Setti
R&D and Incident Response Team, Certego
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