摘要 |
The present invention enables any authentication for a plurality of authentication methods with an authentication server for storing management data on a user. The present invention uses one of set information for logging in with an IC card and user input information from operation means in the case of logging in to a directory server; requests the directory server from a Kerberos authentication operation part for a service ticket; requests the directory server from an LDAP communication operation part for authentication with the service ticket obtained by the relevant request; and requests the directory server from the authentication processing functioning part for a search for granting use of the relevant MFP to a user with one of card information read by a card reader and a user name of user input information in the case where authentication to the directory server by the relevant request is successful.
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