Thanks for the answer. I'll try it. Em sáb, 15 de set de 2018 06:46, Saku Ytti <saku@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@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@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@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