D-Link DES-3550 Command Line Interface Reference Manual page 264

config authen_enable
Purpose Used to configure a user-defined method list of authentication methods for promoting normal
user level privileges to Administrator level privileges on the Switch.
Syntax config authen_enable [default | method_list_name <string 15>] method {tacacs |
xtacacs | tacacs+ | radius | server_group <string 15> | local_enable | none}
Description This command is used to promote users with normal level privileges to Administrator level
privileges using authentication methods on the Switch. Once a user acquires normal user
level privileges on the Switch, he or she must be authenticated by a method on the Switch to
gain administrator privileges on the Switch, which is defined by the Administrator. A
maximum of eight (8) enable method lists can be implemented simultaneously on the Switch.
The sequence of methods implemented in this command will affect the authentication result.
For example, if a user enters a sequence of methods like tacacs – xtacacs – local_enable,
the Switch will send an authentication request to the first TACACS host in the server group.
If no verification is found, the Switch will send an authentication request to the second
TACACS host in the server group and so on, until the list is exhausted. At that point, the
Switch will restart the same sequence with the following protocol listed, xtacacs. If no
authentication takes place using the xtacacs list, the local_enable password set in the
Switch is used to authenticate the user.
Successful authentication using any of these methods will give the user an "Admin" level
privilege.
default – The default method list for adminstration rights authentication, as defined by the
Parameters
user. The user may choose one or a combination of up to four (4) of the following
authentication methods:
method_list_name – Enter a previously implemented method list name defined by the user
(create authen_enable). The user may add one, or a combination of up to four (4) of the
following authentication methods to this method list:
DES-3550 Layer 2 Fast Ethernet Switch
tacacs – Adding this parameter will require the user to be authenticated using the
TACACS protocol from the remote TACACS server hosts of the TACACS server
group list.
xtacacs – Adding this parameter will require the user to be authenticated using the
XTACACS protocol from the remote XTACACS server hosts of the XTACACS
server group list.
tacacs+ – Adding this parameter will require the user to be authenticated using the
TACACS+ protocol from the remote TACACS+ server hosts of the TACACS+
server group list.
radius – Adding this parameter will require the user to be authenticated using the
RADIUS protocol from the remote RADIUS server hosts of the RADIUS server
group list.
server_group <string 15> - Adding this parameter will require the user to be
authenticated using a user-defined server group previously configured on the
Switch.
local_enable - Adding this parameter will require the user to be authenticated using
the local user account database on the Switch.
none – Adding this parameter will require no authentication to access the Switch.
tacacs – Adding this parameter will require the user to be authenticated using the
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