The network device must be configured to use an authentication server to authenticate users prior to granting administrative access.
Centralized management of authentication settings increases the security of remote and nonlocal access methods. This is particularly important protection against the insider threat. With robust centralized management, audit records for administrator account access to the organization's network devices can be more readily analyzed for trends and anomalies. The alternative method of defining administrator accounts on each device exposes the device configuration to remote access authentication attacks and system administrators with multiple authenticators for each network device.