On Aug 6, 2007, at 9:34 AM, Rob Janssen wrote: > I still question the position that they are abusers and should be > stopped.
OK. I don't think there is any question about the matter, but there's nothing wrong with re-evaluating the situation with an open mind. > I think they are just a large-scale customer. Apparently they put > europe.pool.ntp.org as the time source in their ADSL routers. a) TurkTelecom sends traffic to people listed in the world-wide pool, not just in Europe. b) That is a violation of the NTP pool policy: http://www.pool.ntp.org/vendors.html "You must get approval from the server operator before you hardcode any IP addresses or hostnames. This is easy to get if your own organization runs the NTP servers you are planning to use. In most other cases you will not get it. Do not use the standard pool.ntp.org names as a default configuration in your system. The NTP Pool can offer services for you, but it must be setup in advance (see below)." > Sure, it would be very friendly of them when they set up their own NTP > server and pointed all their routers to there. That would save us > a lot of traffic. > But note that when our project would be a little more successful, and > home users actually would put a pool server in the configuration of > their PC, we > would be in the same situation but worse. Because those PCs would > poll the servers in a repeated pattern, so we would not see those > peaks but a continuous flow of > traffic all the time. Continuous steady traffic at a reasonable polling rate isn't a problem; high spikes from a single subnet block are. > I think all this complaining about their abuse is unwarranted. Even though putting the pool.ntp.org address into their routers is a violation of the "vendor policy" referenced above? > So instead of bickering at Türk Telecom about their "abuse", we better > look at our own project and its capability to scale. Because this > might only be an > easy test case for much worse trouble to come. Turk Telecom is welcome to use the pool, according to the generally published access policy, but they aren't welcome to hard-code pool addresses into every router they ship to their users-- they need to use a vendor address specifically for them if they wish to do that. A large ISP should be providing default NTP servers for their user base, rather than sending all of that traffic elsewhere. -- -Chuck _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
