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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Schneier: ISPs should bear security burden
on Sat, Apr 30, 2005 at 07:41:34AM +0530, Suresh Ramasubramanian wrote: > > On 4/30/05, Steven Champeon <[email protected]> wrote: > > > ANantes-106-1-5-107.w193-251.abo.wanadoo.fr > > > > You'll see 'abo' for 'cable', perhaps? as well as 'cable'. But for most > > abo = short for "abonnement", that is, "subscription" / "subscriber" > Just means its a pool of IPs assigned to users, I guess. Yes, Romain Komorn was kind enough to tell me this offlist. Thanks. > > Dunno. Don't have many examples of those, as I block most traffic from > > there, and what I didn't block didn't often have rDNS anyway. The one > > net.cn example I have, nova, named all of their rDNS with > > user.nova.net.cn - yep, that's it - what every host is named. > > And there's a vietnamese ISP that was clever enough to give the same > rDNS - "localhost" - to all their IP space. Don't know which one of > the three ISPs there does this, but as APNIC 20 is in Hanoi, I'll most > likely find that out for myself. Yep - got a rule to block stuff from them and everyone else who does something that stupid, too. > > FPT Viet Nam uses 'adsl-pool-xxx', 'adsl-fix-xxx', and 'dialup-xxx' (yes, > > the x's are part of the actual name, not a placeholder for the numbers). > > So its not FPT Vietnam, but one of the two other ISPs there They may use it, too. I dunno. It's not reliable to assume that any one given network always has the same rDNS naming conventions. > > 'bredband'. The Japanese use 'flets' and 'ftth', the Dutch and others > > ftth = fiber to the home. flets is also some kind of fiber. infoweb.ne.jp uses ftth, as does solcon.nl, onsnet.nu, and a few US ISPs, such as brightohio.net, cvalley.net, and surewest.net. nmt.ne.jp uses flets, as does across.or.jp, netwave.or.jp, dsn.jp, alpha-net.ne.jp (which also apparently uses "bflets", and incl.ne.jp. Google suggests others do, too, but they haven't come across my radar yet, or don't use it in rDNS naming. -- hesketh.com/inc. v: +1(919)834-2552 f: +1(919)834-2554 w: http://hesketh.com join us! http://hesketh.com/about/careers/account_manager.html join us!
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