Users Guide

Methods congured with the aaa authentication login command are evaluated in the order they
are congured. If users encounter an error with the rst method listed, Dell Networking OS applies the next
method congured. If users fail the rst method listed, no other methods are applied. The only exception is
the local method. If the user’s name is not listed in the local database, the next method is applied. If the
correct user name/password combination is not entered, the user is not allowed access to the switch.
NOTE: If authentication fails using the primary method, Dell Networking OS employs the second
method (or third method, if necessary) automatically. For example, if the TACACS+ server is
reachable, but the server key is invalid, Dell Networking OS proceeds to the next authentication
method. The TACACS+ is incorrect, but the user is still authenticated by the secondary method.
After conguring the aaa authentication login command, congure the login
authentication
command to enable the authentication scheme on terminal lines.
Connections to the SSH server work with the following login mechanisms: local, radius, and tacacs.
Related Commands
• login authentication — enables AAA login authentication on the terminal lines.
• password — creates a password.
• radius-server host — species a RADIUS server host.
• tacacs-server host — species a TACACS+ server host.
access-class
Restrict incoming connections to a particular IP address in a dened IP access control list (ACL).
Syntax
access-class access-list-name
To delete a setting, use the no access-class command.
Parameters
access-list-name Enter the name of an established IP Standard ACL.
Defaults Not congured.
Command Modes LINE
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000–ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
Security
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