RE: Anyone notice strange announcements for 174.128.31.0/24

["Michienne Dixon" <mdixon () nkc org>]

Well, if you really want to pick knits you are welcome to.  If I meant
prepending, I would have said that. The example that I listed was
setting up a router, advertising the ASNs listed and the random IP
ranges gleaned from IANA.  Sorry if I confused you.


-
Michienne Dixon
Network Administrator
liNKCity
312 Armour Rd.
North Kansas City, MO  64116
www.linkcity.org
(816) 412-7990

-----Original Message-----
From: John Payne [mailto:john () sackheads org] 
Sent: Wednesday, January 14, 2009 3:57 PM
To: Michienne Dixon
Cc: NANOG list
Subject: Re: Anyone notice strange announcements for 174.128.31.0/24


On Jan 14, 2009, at 10:50 AM, Michienne Dixon wrote:

> Interesting - So as a cyber criminal - I could setup a router, start 
> announcing AS 16733, 18872, and maybe 6966 for good measure and their 
> routers would ignore my announcements and IP ranges that I siphoned 
> from searching IANA?  Hm...  Would that also prevent them from 
> accessing my rogue network from their network?


What do you mean "announcing AS 16733..." ?

Putting 16733 in an AS PATH is not announcing it.

> -
> Michienne Dixon
> Network Administrator
> liNKCity
> 312 Armour Rd.
> North Kansas City, MO  64116
> www.linkcity.org
> (816) 412-7990
>
> -----Original Message-----
> From: Simon Lockhart [mailto:simon () slimey org]
> Sent: Wednesday, January 14, 2009 2:07 AM
> To: Hank Nussbacher
> Cc: NANOG list
> Subject: Re: Anyone notice strange announcements for 174.128.31.0/24
>
> On Wed Jan 14, 2009 at 09:59:14AM +0200, Hank Nussbacher wrote:
> > What if, by doing some research experiment, the researcher discovers 
> > some unknown and latent bug in IOS or JunOS that causes much of the 
> > Internet to go belly up?  1 in a billion chance, but nonetheless, a 
> > headsup would have been in order.
>
> Say we had a customer who connected to us over BGP, and they used some

> new experimental BGP daemon. Their announcement was "odd" in some way,

> but appeared clean to us (a Cisco house). Once their announcement hit 
> the a Foundry router, it tickled a bug which caused the router to 
> propogate the announcement, but also start to blackhole traffic. Oh 
> dear, large chunks of the Internet have just gone belly up.
>
> Should we have given a heads up to the Internet at large that we were 
> turning up this customer?
>
> Simon
> (Yes, I'm in the minority that thinks that Randy hasn't done anything
> bad)
> --
>
> Simon Lockhart | * Sun Server Colocation * ADSL * Domain Registration 
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