Port security

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Port securityPort securityPort securityPort securityPort securityPort security
Port securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort securityPort security