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Assessment Title
Rule Text
The network device, for PKI-based authentication, must be configured to map validated certificates to unique user accounts.
Description
Discussion Text
Without mapping the PKI certificate to a unique user account, the ability to determine the identities of individuals or the status of their non-repudiation is considerably impacted during forensic analysis. A strength of using PKI as MFA is that it can help ensure only the assigned individual is using their associated user account. This can only be accomplished if the network device is configured to enforce the relationship which binds PKI certificates to unique user accounts.
Local accounts (accounts created, stored, and maintained locally on the network device) should be avoided in lieu of using a centrally managed directory service. Local accounts empower the same workgroup who will be operating the network infrastructure to also control and manipulate access methods, thus creating operational autonomy. This undesirable approach breaks the concept of separation of duties. Additionally, local accounts are susceptible to poor cyber hygiene because they create another user database that must be maintained by the operator, whose primary focus is on running the network. Such examples of poor hygiene include dormant accounts that are not disabled or deleted, employees who have left the organization but whose accounts are still present, periodic password and hash rotation, password complexity shortcomings, increased exposure to insider threat, etc. For reasons such as this, local users on network devices are frequently the targets of cyber-attacks. Instead, organizations should explore examples of centrally managed account services. These examples include the implementation of AAA concepts like the use of external RADIUS and LDAP directory service brokers.
Local accounts (accounts created, stored, and maintained locally on the network device) should be avoided in lieu of using a centrally managed directory service. Local accounts empower the same workgroup who will be operating the network infrastructure to also control and manipulate access methods, thus creating operational autonomy. This undesirable approach breaks the concept of separation of duties. Additionally, local accounts are susceptible to poor cyber hygiene because they create another user database that must be maintained by the operator, whose primary focus is on running the network. Such examples of poor hygiene include dormant accounts that are not disabled or deleted, employees who have left the organization but whose accounts are still present, periodic password and hash rotation, password complexity shortcomings, increased exposure to insider threat, etc. For reasons such as this, local users on network devices are frequently the targets of cyber-attacks. Instead, organizations should explore examples of centrally managed account services. These examples include the implementation of AAA concepts like the use of external RADIUS and LDAP directory service brokers.
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