Administrator Guide

DellEMC(conf)#line vty 0 9
DellEMC(config-line-vty)#login authentication localmethod
DellEMC(config-line-vty)#end
VTY Line Remote Authentication and Authorization
retrieves the access class from the VTY line.
The takes the access class from the VTY line and applies it to ALL users. does not need to know the identity of the
incoming user and can immediately apply the access class. If the authentication method is RADIUS, TACACS+, or line, and
you have configured an access class for the VTY line, immediately applies it. If the access-class is set to deny all or deny for
the incoming subnet, closes the connection without displaying the login prompt. The following example shows how to deny
incoming connections from subnet 10.0.0.0 without displaying a login prompt. The example uses TACACS+ as the authentication
mechanism.
Example of Configuring VTY Authorization Based on Access Class Retrieved from the Line (Per Network Address)
DellEMC(conf)#ip access-list standard deny10
DellEMC(conf-ext-nacl)#permit 10.0.0.0/8
DellEMC(conf-ext-nacl)#deny any
DellEMC(conf)#
DellEMC(conf)#aaa authentication login tacacsmethod tacacs+
DellEMC(conf)#tacacs-server host 256.1.1.2 key Force10
DellEMC(conf)#
DellEMC(conf)#line vty 0 9
DellEMC(config-line-vty)#login authentication tacacsmethod
DellEMC(config-line-vty)#
DellEMC(config-line-vty)#access-class deny10
DellEMC(config-line-vty)#end
(same applies for radius and line authentication)
VTY MAC-SA Filter Support
supports MAC access lists which permit or deny users based on their source MAC address.
With this approach, you can implement a security policy based on the source MAC address.
To apply a MAC ACL on a VTY line, use the same access-class command as IP ACLs.
The following example shows how to deny incoming connections from subnet 10.0.0.0 without displaying a login prompt.
Example of Configuring VTY Authorization Based on MAC ACL for the Line (Per MAC Address)
DellEMC(conf)#mac access-list standard sourcemac
DellEMC(config-std-mac)#permit 00:00:5e:00:01:01
DellEMC(config-std-mac)#deny any
DellEMC(conf)#
DellEMC(conf)#line vty 0 9
DellEMC(config-line-vty)#access-class sourcemac
DellEMC(config-line-vty)#end
Role-Based Access Control
With Role-Based Access Control (RBAC), access and authorization is controlled based on a user’s role. Users are granted
permissions based on their user roles, not on their individual user ID. User roles are created for job functions and through those
roles they acquire the permissions to perform their associated job function.
This chapter consists of the following sections:
● Overview
● Privilege-or-Role Mode Versus Role-only Mode
● Configuring Role-based Only AAA Authorization
● System-Defined RBAC User Roles
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Security