White Papers

Example:
DellEMC(config)#aaa authentication login vty_auth_list radius
Force all logged-in users to re-authenticate (y/n)?
3. You are prompted to force the users to re-authenticate whenever there is a change in the RADIUS server list..
CONFIGURATION mode
radius-server host IP Address
Example:
DellEMC(config)#radius-server host 192.100.0.12
Force all logged-in users to re-authenticate (y/n)?
DellEMC(config)#no radius-server host 192.100.0.12
Force all logged-in users to re-authenticate (y/n)?
Obscuring Passwords and Keys
By default, the service password-encryption command stores encrypted passwords. For greater security, you can also
use the service obscure-passwords command to prevent a user from reading the passwords and keys, including RADIUS,
TACACS+ keys, router authentication strings, VRRP authentication by obscuring this information. Passwords and keys are
stored encrypted in the configuration file and by default are displayed in the encrypted form when the configuration is displayed.
Enabling the service obscure-passwords command displays asterisks instead of the encrypted passwords and keys. This
command prevents a user from reading these passwords and keys by obscuring this information with asterisks.
Password obscuring masks the password and keys for display only but does not change the contents of the file. The string of
asterisks is the same length as the encrypted string for that line of configuration. To verify that you have successfully obscured
passwords and keys, use the show running-config command or show startup-config command.
If you are using role-based access control (RBAC), only the system administrator and security administrator roles can enable
the service obscure-password command.
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
DellEMC(config)# service obscure-passwords
AAA Authorization
Dell EMC 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 EMC 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 EMC Networking OS, you can
configure a privilege level for users who need limited access to the system.
Every command in Dell EMC Networking OS is assigned a privilege level of 0, 1, or 15. You can configure up to 16 privilege levels
in Dell EMC Networking OS. Dell EMC Networking OS is pre-configured with three privilege levels and you can configure 13
more. The three pre-configured levels are:
798
Security