Reference Guide

Dell(config)# aaa authentication enable default radius tacacs
Radius and TACACS server has to be properly setup for this.
Dell(config)# radius-server host x.x.x.x key <some-password>
Dell(config)# tacacs-server host x.x.x.x key <some-password>
To use local authentication for enable secret on the console, while using remote authentication on
VTY lines, issue the following commands.
Dell(config)# aaa authentication enable mymethodlist radius tacacs
Dell(config)# line vty 0 9
Dell(config-line-vty)# enable authentication mymethodlist
Server-Side Configuration
• TACACS+ — When using TACACS+, Dell Networking sends an initial packet with service type
SVC_ENABLE, and then sends a second packet with just the password. The TACACS server must have
an entry for username $enable$.
• RADIUS — When using RADIUS authentication, FTOS sends an authentication packet with the
following:
Username: $enab15$
Password: <password-entered-by-user>
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 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.
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