Deployment Guide

Security
The Aggregator provides many security features.
This chapter describes several ways to provide access security to the Dell Networking system.
For details about all the commands described in this chapter, see the Security chapter in the Dell PowerEdge Command Line Reference
Guide for the M I/O Aggregator .
Supported Modes
Standalone, PMUX, VLT, Stacking
NOTE: You can also perform some of the congurations using the Web GUI - Dell Blade IO Manager. For more information, see
the Dell Blade IO Manager Online Help.
Topics:
• Understanding Banner Settings
• Accessing the I/O Aggregator Using the CMC Console Only
• AAA Authentication
• AAA Authorization
• RADIUS
• TACACS+
• Enabling SCP and SSH
• Telnet
• VTY Line and Access-Class Conguration
• Dell EMC Networking OS Security Hardening
Understanding Banner Settings
This functionality is supported on the Aggregator.
A banner is a note that is displayed when you log in to the system, depending on the privilege level and the command mode into which the
you log in. You can specify dierent banners to be displayed as the message-of-the-day (MOTD), as the opening quote in EXEC mode, or
as the beginning message in EXEC Privilege mode. Setting up a banner enables you to display any important information or group-level
notication that needs to be communicated to all the users of the system.
A login banner message is displayed only in EXEC Privilege mode after entering the enable command followed by the password. These
banners are not displayed to users in EXEC mode. When you connect to a system, the message-of-the-day (MOTD) banner is displayed
rst, followed by the login banner and prompts. After you log in to the system with valid authentication credentials, the EXEC banner is
shown.
You can use the MOTD banner to alert users of critical upcoming events so that they can plan and schedule their accessibility to the
device. You can modify the banner messages depending on the requirements or conditions.
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186 Security