Installation manual

4-102
SIGNAMAX LLC • www.signamax.eu
Example
Related Commands
username - for setting the local user names and passwords (4-99)
authentication enable
This command defines the authentication method and precedence to use when changing
from Exec command mode to Privileged Exec command mode with the enable command
(see page 4-12). Use the no form to restore the default.
Syntax
authentication enable {[local] [radius] [tacacs]}
no authentication enable
• local - Use local password only.
• radius - Use RADIUS server password only.
• tacacs - Use TACACS server password.
Default Setting
Local
Command Mode
Global Configuration
Command Usage
• RADIUS uses UDP while TACACS+ uses TCP. UDP only offers best effort delivery,
while TCP offers a connection-oriented transport. Also, note that RADIUS encrypts
only the password in the access-request packet from the client to the server, while
TACACS+ encrypts the entire body of the packet.
• RADIUS and TACACS+ logon authentication assigns a specific privilege level for
each user name and password pair. The user name, password, and privilege level
must be configured on the authentication server.
• You can specify three authentication methods in a single command to indicate the
authentication sequence. For example, if you enter “authentication enable radius
tacacs local,” the user name and password on the RADIUS server is verified first.
If the RADIUS server is not available, then authentication is attempted on the
TACACS+ server. If the TACACS+ server is not available, the local user name and
password is checked.
Example
Console(config)#authentication login radius
Console(config)#
Console(config)#authentication enable radius
Console(config)#