Dell S4048-ON, Руководство по настройке

Страница: 740 / 1039

To enable the obscuring of passwords and keys, use the following command.
• Turn on the obscuring of passwords and keys in the configuration.
CONFIGURATION mode
service obscure-passwords
Example of Obscuring Password and Keys
Dell(config)# service obscure-passwords
AAA Authorization
Dell Networking OS enables AAA new-model by default.
You can set authorization to be either
local
or
remote
. Different combinations of authentication and authorization yield different
results. By default, Dell Networking OS sets both to local .
Privilege Levels Overview
Limiting access to the system is one method of protecting the system and your network. However, at times, you might need to allow
others access to the router and you can limit that access to a subset of commands. In Dell Networking OS, you can configure a
privilege level for users who need limited access to the system.
Every command in Dell Networking OS is assigned a privilege level of 0, 1, or 15. You can configure up to 16 privilege levels in Dell
Networking OS. Dell Networking OS is pre-configured with three privilege levels and you can configure 13 more. The three pre-
configured levels are:
• Privilege level 1 — is the default level for EXEC mode. At this level, you can interact with the router, for example, view some
show
commands and Telnet and ping to test connectivity, but you cannot configure the router. This level is often called the
“user” level. One of the commands available in Privilege level 1 is the
enable
command, which you can use to enter a specific
privilege level.
• Privilege level 0 — contains only the end , enable , and disable commands.
• Privilege level 15 — the default level for the
enable
command, is the highest level. In this level you can access any command
in Dell Networking OS.
Privilege levels 2 through 14 are not configured and you can customize them for different users and access.
After you configure other privilege levels, enter those levels by adding the level parameter after the
enable
command or by
configuring a user name or password that corresponds to the privilege level. For more information about configuring user names,
refer to
Configuring a Username and Password .
By default, commands in Dell Networking OS are assigned to different privilege levels. You can access those commands only if you
have access to that privilege level. For example, to reach the
protocol spanning-tree
command, log in to the router, enter
the
enable
command for privilege level 15 (this privilege level is the default level for the command) and then enter
CONFIGURATION mode.
You can configure passwords to control access to the box and assign different privilege levels to users. Dell Networking OS supports
the use of passwords when you log in to the system and when you enter the
enable
command. If you move between privilege
levels, you are prompted for a password if you move to a higher privilege level.
Configuration Task List for Privilege Levels
The following list has the configuration tasks for privilege levels and passwords.
• Configuring a Username and Password (mandatory)
• Configuring the Enable Password Command (mandatory)
• Configuring Custom Privilege Levels (mandatory)
• Specifying LINE Mode Password and Privilege (optional)
740
Security