[Oisf-users] BPF Filter in af-packet Suricata 5.0.1

Peter Manev petermanev at gmail.com
Fri Jan 10 08:17:48 UTC 2020


On Fri, Jan 10, 2020 at 1:56 AM Tiago Faria <tiago.faria.backups at gmail.com>
wrote:

> Hi list,
>
> I wanted to first check here before going into Redmine, but it appears
> that Suricata 5.0.1 is not processing/accepting "bpf-filter: <file>" under
> af-packet.
>
> Section of suricata.yaml:
>
> af-packet:
> -   cluster-id: 1
>     cluster-type: cluster_flow
>     interface: enp2s0
>     threads: auto
>     tpacket-v3: 'yes'
>     use-mmap: 'yes'
>     bpf-filter: '/etc/suricata/capture-filter.bpf'
>

I think this spot is for the filter itself  , for example
bpf-filter: not host 1.1.1.1 and not host 2.2.2.2
(for that specific interface enp2s0)

if you have a BPF file you can supply it on the start/command line like
suricata -F /path/to/bpf.file


>
> The content of capture-filter.bpf:
>
> not host 1.1.1.1 and
> not host 2.2.2.2
>
> As far as I could tell from the documentation both the content of the file
> and the yaml configuration should be OK.
>
> Any pointers?
>
> Thank you.
> T
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-- 
Regards,
Peter Manev
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