Hi All, Is there a suggested way to rate-limit queries by broken clients?
Running an NTP Pool Server costs me $40/month in Amazon AWS Outbound Bandwidth (if you want the full scoop, read here: http://pivotallabs.com/ntp-server-costing-500year/ ). I suspect that broken NTP clients are part of the problem (for example, 2 IP addresses in Puerto Rico query my server on the average 11.5 times per second--eliminating just those 2 would save me almost $1/month). Are there any other techniques people have found to be helpful? I like running a server for the NTP Pool, I just don't want to spend a lot of money doing it. Thanks, --Brian p.s. No, my server isn't being used in a reflection attack: monlist is disabled, and the NTP traffic load is symmetric. _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
