On this note, does anyone have recommendations on an affordable GPS clock source ?
 
Sent: Wednesday, February 12, 2014 4:22 PM
Cc: nznog
Subject: Re: [nznog] NTP reflection used for world's largest DDoS
 
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?