Help with AS-Path manipulation

[Marcio]

Thanks for the answer. I'll try it.

Em sáb, 15 de set de 2018 06:46, Saku Ytti <saku at ytti.fi> escreveu:

> You could recreate the route via static route and depend on existing
> one. In static route you can attach AS-PATH in any way you want.
>
>   route 2.20.144.0/22 unreachable {
>     bgp_local_pref = 0;
>     bgp_path.prepend(20940);
>     bgp_path.prepend(20940);
>     bgp_path.prepend(10429);
>     bgp_path.prepend(12956);
>   };
>
> For other interested parties, there are many use cases for AS_PATH
> manipulatoin
>
> a) injecting realistic RIB to DUT
> b) network-based firewall running eBGP (ASnet => ASfw => ASnet => ASfw
> => ASnet to firewall traffic between two VRFs)
> c) security research, hijack detection testing
> d) many things I likely don't know about, but are reasonable
>
> Lot of commercial BGP solutions support AS_PATH manipulation.
> On Sat, 15 Sep 2018 at 07:01, Marcio <marciovinicius.santos at uniriotec.br>
> wrote:
> >
> > I'd like to perform a Hijacking but changing a soecific position of AS
> Path. Is it poasible to perform it with BIRD? If not, is there another way
> to do this?
> >
> > Em sex, 14 de set de 2018 12:37, Job Snijders <job at instituut.net>
> escreveu:
> >>
> >> Dear Marcio,
> >>
> >> What is your use case for extensive manipulation of the AS_PATH?
> >>
> >> Kind regards,
> >>
> >> Job
> >>
> >> On Fri, 14 Sep 2018 at 16:02, Marcio <
> marciovinicius.santos at uniriotec.br> wrote:
> >>>
> >>> Dear,
> >>>
> >>> Could you help me with an information? Is there a way to generate an
> announce modifying the AS Path field using BIRD? For example, i´d like to
> announce a prefix with a false AS Path field where i could change it,
> inserting or removing an AS.
>
>
>
> --
>   ++ytti
>
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