Determines if TCP or UDP port 11211 for Memcached is open to the public
Memcached port 11211 is used for caching system and to reduce response times and the load on components. Allowing inbound traffic from any external IP address on memcached port is vulnerable to DoS attacks. It is a best practice to restrict access from specific IP addresses to port 11211.
Restrict TCP and UDP port 11211 to known IP addresses.