nanog mailing list archives

Re: automatic rtbh trigger using flow data


From: Joe Maimon <jmaimon () jmaimon com>
Date: Thu, 30 Aug 2018 19:30:18 -0400



Michel Py wrote:
Aaron Gould wrote :
Hi, does anyone know how to use flow data to trigger a rtbh (remotely triggered blackhole) route using bgp ?  ...I'm 
thinking we could use
quagga or a script of some sort to interact with a router to advertise to bgp the /32 host route of the victim under 
attack.
Look at Exabgp : https://github.com/Exa-Networks/exabgp
That's what I use in here : https://arneill-py.sacramento.ca.us/cbbc/ to inject the prefixes in BGP.
I block the attacker's addresses, not the victim but if you are willing to write your own scripts it does the job.

Michel.


I use a bunch of scripts plus a supervisory sqlite3 database process all injecting into quagga

Also aimed at attacker sources. I feed it with honeypots and live servers, hooked into fail2ban and using independent host scripts.

Not very sophisticated, the remotes use ssh executed commands to add/delete. I also setup a promiscuous ebgp RR so I can extend my umbrella to CPE with diverse connectivity.

Using flow data, that sounds like an interesting direction to take this into, so thank you!

Joe


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