Ricoh Pro 8100 EX User Guide - Page 417

2. Configuring User Authentication Windows Authentication Specify this authentication when using the Windows domain controller to authenticate users who have their accounts on the directory server. Users cannot be authenticated if they do not have their accounts in the directory server. Under Windows authentication, you can specify the access limit for each group registered in the directory server. The Address Book stored in the directory server can be registered to the machine, enabling user authentication without first using the machine to register individual settings in the Address Book. Obtaining user information can prevent the use of false identities because the sender's address (From:) is determined by the authentication system when scanned data is sent. The first time you access the machine, you can use the functions available to your group. If you are not registered in a group, you can use the functions available under "*Default Group". To limit which functions are available to which users, first make settings in advance in the Address Book. To automatically register user information such as e-mail addresses under Windows authentication, it is recommended that communication between the machine and domain controller be encrypted using SSL. To do this, you must create a server certificate for the domain controller. For details about creating a server certificate, see page 50 "Creating the Server Certificate". Windows authentication can be performed using one of two authentication methods: NTLM or Kerberos authentication. The operational requirements for both methods are listed below. Operational requirements for NTLM authentication To specify NTLM authentication, the following requirements must be met: • This machine supports NTLMv1 authentication and NTLMv2 authentication. • A domain controller has been set up in a designated domain. • This function is supported by the operating systems listed below. To obtain user information when running Active Directory, use LDAP. If you are using LDAP, we recommend you use SSL to encrypt communication between the machine and the LDAP server. Encryption by SSL is possible only if the LDAP server supports TLSv1 or SSLv3. • Windows Server 2003/2003 R2 • Windows Server 2008/2008 R2 • Windows Server 2012 Operational requirements for Kerberos authentication To specify Kerberos authentication, the following requirements must be met: • A domain controller must be set up in a designated domain. • The operating system must support KDC (Key Distribution Center). To obtain user information when running Active Directory, use LDAP. If you are using LDAP, we recommend you use SSL to encrypt communication between the machine and the LDAP server. Encryption by SSL is possible only if the LDAP server supports TLSv1 or SSLv3. Compatible operating systems are listed below. • Windows Server 2003/2003 R2 42