Re: Logging NAT translations and correlating nat & rule logs

From: Özkan KIRIK <ozkan.kirik_at_gmail.com>
Date: Tue, 28 Dec 2021 06:57:48 UTC
And also, rule number and subrulenr information is missing.

On Tue, Dec 28, 2021 at 7:50 AM Özkan KIRIK <ozkan.kirik@gmail.com> wrote:
>
> Hi,
>
> I've cherry picked 8e496ea1df1 commit to stable/12 on my local branch.
> Patch works properly.
> But the ruleset section in the pflog header is empty. The anchor name
> of rdr rule was not filled into the pflog header.
>
> I'm also looking for a packet identifier for aggregating the nat and
> rule logs of the same traversing packet.
> Does it make sense to use ip.id field of ip header within 1 second
> time window for aggregating logs ?
>
> Thanks and regards
>
> On Wed, Dec 1, 2021 at 4:23 PM Özkan KIRIK <ozkan.kirik@gmail.com> wrote:
> >
> > Thank you Franco, I'll test it
> >
> > On Wed, Dec 1, 2021 at 4:10 PM Franco Fichtner <franco@lastsummer.de> wrote:
> > >
> > > Hi Özkan,
> > >
> > > > On 28. Nov 2021, at 8:06 PM, Özkan KIRIK <ozkan.kirik@gmail.com> wrote:
> > > >
> > > > I'm trying to log NAT, BINAT, RDR translations. But the "nat log on
> > > > ...." statement only logs the packets after translation is done. So
> > > > the information before translation is lost.
> > > > Is there a way to log the translation details ?
> > >
> > > https://github.com/freebsd/freebsd-src/commit/8e496ea1df1 was introduced
> > > to address this but has not been moved to stable/12 or stable/13.
> > >
> > > I see there is some controversy around patches that made it to stable
> > > for less so I'd probably advocate to add this patch as well since it
> > > solves a longterm issue with NAT logging visibility.
> > >
> > >
> > > Cheers,
> > > Franco