Point well taken, Pubudu, I am sure it is breach of security policy that is responsible for most plant security failures, and no matter what technology is in place this is key to keeping the network safe from intrusion.
Yes Elizabeth this is a really good attempt and Ethernet ids a good option to maximize the security. But it is really important to follow the plant security policy by each and every employee from right top to the bottom in order to have a better security.
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