Has anybody else noticed the rapid decline in NTP Pool servers over the last couple of months? Just a few days ago I found out that my VPN tunnel provider (Reliable Hosting) made a business decision to block Port 123 as their way of mitigating NTP Reflection Attacks. I suggested to their tech guys they should have just policed port 123 traffic and dropped anything that was around 400/bytes or larger. But I'm sure that recommendation will fall on deaf ears.
In any case, looking at the Global pool servers ( http://www.pool.ntp.org/zone) there has been a 10% decline over the last 180 days. 50% of that being in the last 60 days. It just appears that excessive actions are being taken against NTP traffic across the board. Word needs to go out for providers to slow down with the heavy hand of outright port blocking (if that is what's really going on). I'm just using my own encounters as a window on what might be a larger issue underway. -Alby
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