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SonicOS 5.8.1 Administrator Guide
Step 5 From the Query Source pull-down menu, select the protocol that the SSO Agent will use to
communicate with workstations, either NETAPI or WMI.
Note NetAPI will provide faster, though possibly slightly less accurate, performance. WMI will
provide slower, though possibly more accurate, performance. With NetAPI, Windows reports
the last login to the workstation whether or not the user is still logged in. This means that
after a user logs out from his computer, the appliance will still show the user as logged in
when NetAPI is used. If another user logs onto the same computer, then at that point the
previous user is logged out from the SonicWALL.
WMI is pre-installed on Windows Server 2003, Windows XP, Windows Me, and Windows 2000.
Both NetAPI and WMI can be manually downloaded and installed. NetAPI and WMI provide
information about users that are logged into a workstation, including domain users, local users,
and Windows services.
User identification via the Domain Controller Security Log can be configured for WMI with a
non-administrator domain account. Although this option does not require use of the
administrator domain account, it still requires read access to the security log, which can be
accomplished by configuring a non-admin account. For more information, refer to the
Configuring a Non-Admin Domain Account for SSO Agent to Read Security Logs technical note
in the Support > Product Documentation page on SonicWALL.com.