Reference Guide

Security | 777
Server-side configuration
TACACS+: When using TACACS+, Dell Networking sends an initial packet with service type
SVC_ENABLE, and then, a second packet with just the password. The TACACS server must have an
entry for username $enable$.
RADIUS: When using RADIUS authentication, Dell Networking OS sends an authentication packet with
the following:
Therefore, the RADIUS server must have an entry for this username.
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 3 privilege levels
and you can configure 13 more. The three pre-configured levels are:
• Privilege level 1—is the default level for the 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. Refer to
Configuring a username and password on page 778 for more information on configuring user names.
Username: $enab15$
Password: <password-entered-by-user>