Dell PowerConnect 6224, Руководство по интерфейсу командной строки

Страница: 168 / 1372

168
Using the CLI
• The user password is saved internally in encrypted format and never
appears in clear text anywhere on the CLI.
• The CLI supports and Radius authentication servers.
• The CLI allows the user to configure primary and secondary
authentication servers. If the primary authentication server fails to respond
within a configurable period, the CLI automatically tries the secondary
authentication server.
• The user can specify whether the CLI should revert to using local user
accounts when the remote authentication servers do not respond or if the
CLI simply fails the login attempt because the authentication servers are
down. This requirement applies only when the user is login through a
telnet or an SSH session.
• The CLI always allows the user to log in to a local serial port even if the
remote authentication server(s) are down. In this case, CLI reverts to using
the locally configured accounts to allow the user to log in.
User Access Control
In addition to authenticating a user, the CLI also assigns the user access to
one of two security levels. Level 1 has read-only access. This level allow the
user to read information but not configure the switch. The access to this level
cannot be modified. Level 15 is the special access level assigned to the
superuser of the switch. This level has full access to all functions within the
switch and can not be modified.
If the user account is created and maintained locally, each user is given an
access level at the time of account creation. If the user is authenticated
through remote authentication servers, the authentication server is
configured to pass the user access level to the CLI when the user is
authenticated. When Radius is used, the
Vendor-Specific Option
field
returns the access level for the user. Two vendor specific options are
supported. These are CISCO-AV-Pairs(Shell:priv-lvl=x) and Dell Radius VSA
(user-group=x). provides the appropriate level of access.
The following rules and specifications apply:
• The user determines whether remote authentication servers or locally
defined user authentication accounts are used.