Component	Description
User Service	Communicates with your directory service. Conveys user-to-group and user-to-domain relationships, to Filtering Service, for use in applying policies. Enables display of directory client information in the Web Security manager. For information about configuring directory service access, see Directory services.
DC Agent	Offers transparent identification of users defined in a Windows-based directory service. Communicates with User Service to provide up-to-date user logon session information for use in policy enforcement. For more information, see DC Agent.
Logon Agent	Provides unsurpassed accuracy in transparent user identification in Linux and Windows networks. Does not rely on a directory service or other intermediary when capturing user logon sessions. Detects user logon sessions as they occur. Logon Agent communicates with the logon application on client machines to ensure that individual user logon sessions are captured and processed. For more information, see Logon Agent.
eDirectory Agent	Works with Novell eDirectory to transparently identify users. Gathers user logon session information from Novell eDirectory, which authenticates users logging on to the network. Associates each authenticated user with an IP address, and then works with User Service to supply the information to Filtering Service. For more information, see eDirectory Agent.
RADIUS Agent	Enables transparent identification of users who use a dial-up, Virtual Private Network (VPN), Digital Subscriber Line (DSL), or other remote connection to access the network. For more information, see RADIUS Agent.