On this note, does anyone have recommendations on an affordable GPS clock source ?

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From: Sam Russell

Sent: Wednesday, February 12, 2014 4:22 PM

To: Simon Lyall

Cc: nznog

Subject: Re: [nznog] NTP reflection used for world's largest DDoS

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What are people doing about this? Is anyone planning to blanket whitelist UDP/123 like most residential ISPs currently do for SMTP? Port scanning their customers pre-emptively to see who's vulnerable? Keeping an eye on rate shapers to see odd bursts in upload speed?

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