I'm experiencing drops in outbound traffic when using the Memcached service over UDP port 11211 of my Amazon Elastic Compute Cloud (Amazon EC2) instance. How do I remove the UDP port 11211 throttle on my EC2 instance?

Amazon EC2 throttles traffic on UDP port 11211 of all EC2 instances by default. To request removal of this throttle, send an email to abuse@amazonaws.com and include the following:

  • Your AWS account number
  • A brief description of your use case
  • A description of your efforts to confirm that your EC2 instances are secure per AWS best practices
  • A description of your efforts to confirm that inbound UDP traffic to port 11211 on your instance is restricted to internal traffic and is not open to the internet

If your request is approved, you'll receive an email to notify you that the throttle on UDP port 11211 of your EC2 instance is removed.

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Published: 2018-03-26