Security Group Memcached (11211) UDP Port Open to Public

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Last Updated:

April 21, 2022

An unused AWS Security Group allows public access to the Memcached UDP port (11211). This port can be used in an amplification attack if exposed and should not be exposed to the public. Unused Security Groups should be removed, or if re-assigned, remove the inbound rule allowing Memcached UDP (port 11211) in this Security Group.