Re: The BGP Visibility Scanner

[Jason Hellenthal <jhellenthal () dataix net>]

Pretty nice. Thanks!

I don't suppose there is any straight text version of all this info is there ?

-- 
 Jason Hellenthal
 IS&T Services Professional
 Inbox: jhellenthal () DataIX net
 JJH48-ARIN


On May 15, 2013, at 6:22, Andra Lutu <andra.lutu () imdea org> wrote:

> Dear all,
>
> We have built a tool that checks the visibility of IPv4 prefixes at the interdomain level.
> The tool is available at *http://visibility.it.uc3m.es/* and you can use it to retrieve the Limited Visibility 
> Prefixes (LVPs) (i.e., prefixes that are not present in all the global routing tables we analyse) injected by a 
> certain originating AS.
> The query is very simple, it just requires to input the AS number for which you want to retrieve the originated LVPs, 
> if any.
> After checking the limited-visibility prefixes, we would appreciate any feedback that you can provide on the cause of 
> the limited visibility (we provide a form with a few very short questions which you could fill in and submit).
>
> Using a dataset from May 2nd 2013, we generated a list with the ASes which are originating LVPs: 
> *http://visibility.it.uc3m.es/fullASlist.html*
> We would like to hear from any operator who might find this project interesting, and, in particular, from these large 
> contributors to the LVPs set.
> Please note that advertising prefixes with limited visibility does not mean that the originating AS is necessarily 
> doing something wrong.
> The ASes might be generating the LVPs knowingly (e.g., scoped advertisements). However, there might be cases where 
> the origin AS might be unaware that some prefixes are not globally visible (when they should) or that others are 
> leaking as a consequence of mis-configurations/slips.
>
> Our purpose is to spread awareness about these latter phenomena, help eliminate the cause of unintended/accidental 
> LVPs and upgrade this tool to an anomaly detection mechanism.
> For more information on the definition and characteristics of a Limited Visibility prefix, please check the 
> Frequently Asked Questions section of the webpage, available here: *http://visibility.it.uc3m.es/Q_and_A_latest.html*
>
> The tool works with publicly available BGP routing data, retrieved from the RIPE NCC RIS and RouteViews Projects. The 
> results are updated on a daily basis.
> For more information on the methodology we refer you to the slides of the NANOG57 presentation about the BGP 
> Visibility Scanner:
> http://www.nanog.org/meetings/nanog57/presentations/Wednesday/wed.general.Lutu.BGP_visibility_scanner.19.pdf
> Also, you can check the RIPE labs article about the BGP Visibility Scanner, available here: 
> https://labs.ripe.net/Members/andra_lutu/the-bgp-visibility-scanner
>
> We are looking forward to your feedback!
>
> Thank you, best regards,
> Andra