[Oisf-users] using suricata as IPS under openbsd

Victor Julien lists at inliniac.net
Mon Dec 2 08:17:24 UTC 2013

On 12/01/2013 12:33 PM, carlopmart wrote:
> Hi all,
>  I am trying to install suricata as IPS under two OpenBSD carp'ed fws to
> inspect http traffic only ...
>  Reviewing suricata docs, I have found how to do this using FreeBSD's
> IPFW only.
>  My questions are:
>  - can I compile suricata under openbsd using "--enable-ipfw" option??

As far as I know, no. OpenBSD uses pf, we support ipfw's divert sockets.

It seems though that since 4.7 OpenBSD does have divert sockets in pf as
well. So *maybe* it will just work:


So, you can give it a try and let us know what the results are.

>  - To enable IPS mode under openbsd, this rule will be ok:
>     "pass in on $int_if inet proto tcp from $internal_net to
> !<all_internal_nets> port http flags S/SA modulate state divert-to
> port 8000" ??

There is an example rule in the link above.

Victor Julien
PGP: http://www.inliniac.net/victorjulien.asc

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