Ricoh C2828 Function Manual page 657

you do not require authentication for printing. However, note that, because the machine does not require
authentication in this case, it may be used by unauthorized users.
1. Press [Simple (Limitation)].
2. Press [Change].
3. Specify the range in which [Simple (Limitation)] is applied to "Printer Job Authentication".
You can specify the IPv4 address range to which this setting is applied, and whether or not to apply
the setting to the parallel and USB interfaces.
4. Press [Exit].
5. Select which of the machine's functions you want to permit.
LDAP Authentication will be applied to the selected functions.
Users can use the selected functions only.
LDAP Authentication
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