Chapter 8
| Authentication Commands
Authentication Sequence
– 197 –
Command Usage
◆
RADIUS uses UDP while 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 encrypts the entire body of the
packet.
◆
RADIUS and 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 server. If
the server is not available, the local user name and password is
checked.
Example
Console(config)#authentication enable radius
Console(config)#
Related Commands
- sets the password for changing command modes (
)
authentication login
This command defines the login authentication method and precedence. Use
the
no
form to restore the default.
Syntax
authentication login
{[
local
] [
radius
] [
tacacs
]}
no authentication login
local
- Use local password.
radius
- Use RADIUS server password.
tacacs
- Use TACACS server password.
Default Setting
Local
Command Mode
Global Configuration
Command Usage
◆
RADIUS uses UDP while uses TCP. UDP only offers best effort
delivery, while TCP offers a connection-oriented transport. Also, note that
