[55341] in North American Network Operators' Group
Re: Banc of America Article
daemon@ATHENA.MIT.EDU (alex@yuriev.com)
Mon Jan 27 15:48:45 2003
Date: Mon, 27 Jan 2003 15:47:40 -0500 (EST)
From: alex@yuriev.com
To: Jeffrey Meltzer <jeffrey@villageworld.com>
Cc: nanog@merit.edu
In-Reply-To: <20030126002439.GA6535@exobit.org>
Errors-To: owner-nanog-outgoing@merit.edu
> < knowing absolutely nothing about how BoA ATM's work >
>
> It could be that BoA's network wasn't flooded / servers infected, but that
> the ATM's do not dial BoA directly, and dial somewhere else (ie, maybe some
> kind of ATM Dial Provider, nationwide wholesale, etc), and then tunnel back
> to BoA to get the data. Could be that the upstream of either the dial
> provider, or BoA was just flooded...
Again, that design makes nearly no sense. The vast majority of the ATMs that
banks own and operate directly are located in the LATAs with bank branches.
Those branches do have good connectivity to the bank processing centers be
that via dedicated links, VPN or carrier pigeons. ATMs do have at a POTS
because that is the way alarm companies monitor them. The sane design is to
aggregate ATMs in zones via large branches and use branch connectivity to
the processing center to provide the link. The other designs are not only
more expensive but also less reliable (as we have seen here).
Alex
