Sorry for delay
I'm pretty sure those proto 4 IPIP is ESP  packets - I was using ping for
testing and was capturing them with tshark, and they were marked ESP there.



2016-11-30 1:24 GMT+03:00 Tom Eastep <teas...@shorewall.net>:

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> On 11/28/2016 10:19 AM, Tom Eastep wrote:
> > On 11/28/2016 09:07 AM, Tom Eastep wrote:
> >
> >
> >
> >> Do you have nested tunnels here? Normally, ESP packets would not
> >>  themselves require 'pol ipsec'.
> >
> >
> > It would probably be most useful if you would forward to me
> > personally the output of 'shorewall dump'. That way, I can see both
> > your Shorewall and IPSEC configurations.
> >
>
> I took another look at your report, and it looks like there is IPIP
> encapsulation occurring (PROTO 4, in the netfilter log entry). So
> again, it looks like there is some sort of nested tunneling occurring.
>
> - -Tom
> - --
> Tom Eastep        \ When I die, I want to go like my Grandfather who
> Shoreline,         \ died peacefully in his sleep. Not screaming like
> Washington, USA     \ all of the passengers in his car
> http://shorewall.net \________________________________________________
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