nanog mailing list archives
Re: well-known NTP?
From: Lars-Johan Liman <liman () autonomica se>
Date: Wed, 12 Apr 2006 01:10:09 +0200
[I just happened to see this, browsing at high speed, so please forgive me, if I'm out of context.] eddy+public+spam () noc everquick net:
AS112-style NTP service, anyone? That would be cooperative and possibly even useful.
That is actually not necessarily such a good idea. With the current AS112 stuff, we only provide DNS reverse service for network for which there should essentially be no queries. Hence, replying with "doesn't exist" is kind of OK. Should an anycast instance go rouge and give false answers, that is still within the bounds of "acceptable", since the query shouldn't be there in the first place. If you create a disparate anycast system of NTP server, you run into a security issue, since many security protocols have "accurate time" as an important parameter, and a rouge anycast NTP server could create substantial amounts of harm from security and other standpoints by giving out incorrect time. Nope, you want your NTP to come from an appropriate source ... preferrably with signatures. Cheers, /Liman #---------------------------------------------------------------------- # There are 10 kinds of people in the world. Those who understand # binary numbers, and those who don't. #---------------------------------------------------------------------- # Lars-Johan Liman, M.Sc. ! E-mail: liman () autonomica se # Senior Systems Specialist ! HTTP : //www.autonomica.se/ # Autonomica AB, Stockholm ! Voice : +46 8 - 615 85 72 #----------------------------------------------------------------------
Current thread:
- Re: Open Letter to D-Link about their NTP vandalism, (continued)
- Re: Open Letter to D-Link about their NTP vandalism Steve Sobol (Apr 13)
- Re: Open Letter to D-Link about their NTP vandalism Edward B. DREGER (Apr 14)
- Re: Open Letter to D-Link about their NTP vandalism Stephen Sprunk (Apr 13)
- Re: Open Letter to D-Link about their NTP vandalism Michael . Dillon (Apr 13)
- Re: Open Letter to D-Link about their NTP vandalism Robert Bonomi (Apr 11)
- Re: Open Letter to D-Link about their NTP vandalism Niels Bakker (Apr 11)
- Re: Open Letter to D-Link about their NTP vandalism Valdis . Kletnieks (Apr 11)
- Re: Open Letter to D-Link about their NTP vandalism Alain Hebert (Apr 11)
- Re: Open Letter to D-Link about their NTP vandalism Hank Nussbacher (Apr 11)
- well-known NTP? (Re: Open Letter to D-Link about their NTP vandalism) Edward B. DREGER (Apr 11)
- Re: well-known NTP? Lars-Johan Liman (Apr 11)
- Re: well-known NTP? Edward B. DREGER (Apr 11)
- Re: well-known NTP? (Re: Open Letter to D-Link about their NTP vandalism) Stephane Bortzmeyer (Apr 12)
- Re: well-known NTP? (Re: Open Letter to D-Link about their NTP vandalism) Peter Dambier (Apr 12)
- Re: well-known NTP? (Re: Open Letter to D-Link about their NTP vandalism) Peter Dambier (Apr 12)
- Re: well-known NTP? (Re: Open Letter to D-Link about their NTP vandalism) Peter Dambier (Apr 12)
- Re: well-known NTP? (Re: Open Letter to D-Link about their NTP vandalism) Tony Finch (Apr 12)
- Re: Open Letter to D-Link about their NTP vandalism Martin Hannigan (Apr 11)
- Re: Open Letter to D-Link about their NTP vandalism Edward B. DREGER (Apr 11)