Choosing as the Authentication Method
One of the login authentication methods available is and the user’s name and password are
sent for authentication to the TACACS hosts specified.
To use to authenticate users, specify at least one server for the system to
communicate with and configure as one of your authentication methods.
To select as the login authentication method, use the following commands.
1.
Configure a server host.
CONFIGURATION mode
tacacs-server host {
ip-address
|
host
}
Enter the IP address or host name of the server.
Use this command multiple times to configure multiple server hosts.
2.
Enter a text string (up to 16 characters long) as the name of the method list you wish to use with the
TACAS+ authentication method.
CONFIGURATION mode
aaa authentication login {
method-list-name
| default} [
...method3
]
The method must not be the last method specified.
3.
Enter LINE mode.
CONFIGURATION mode
line {aux 0 | console 0 | vty
number
[
end-number
]}
4.
Assign the
method-list
to the terminal line.
LINE mode
login authentication {
method-list-name
| default}
Example of a Failed Authentication
To view the configuration, use the
show config
in LINE mode or the
show running-config tacacs
+
command in EXEC Privilege mode.
If authentication fails using the primary method, Dell Networking OS employs the second method (or
third method, if necessary) automatically. For example, if the server is reachable, but the server
key is invalid, Dell Networking OS proceeds to the next authentication method. In the following example,
the is incorrect, but the user is still authenticated by the secondary method.
First bold line: Server key purposely changed to incorrect value.
Second bold line: User authenticated using the secondary method.
Dell(conf)#
Dell(conf)#do show run aaa
!
aaa authentication enable default enable
aaa authentication enable LOCAL enable
aaa authentication login default local
aaa authentication login LOCAL local
aaa authorization exec default none
872
Security
Summary of Contents for S4820T
Page 1: ...Dell Configuration Guide for the S4820T System 9 8 0 0 ...
Page 282: ...Dell 282 Control Plane Policing CoPP ...
Page 622: ...Figure 81 Configuring Interfaces for MSDP 622 Multicast Source Discovery Protocol MSDP ...
Page 623: ...Figure 82 Configuring OSPF and BGP for MSDP Multicast Source Discovery Protocol MSDP 623 ...
Page 629: ...Figure 86 MSDP Default Peer Scenario 2 Multicast Source Discovery Protocol MSDP 629 ...
Page 630: ...Figure 87 MSDP Default Peer Scenario 3 630 Multicast Source Discovery Protocol MSDP ...
Page 751: ...10 11 5 2 00 00 05 00 02 04 Member Ports Te 1 2 1 PIM Source Specific Mode PIM SSM 751 ...
Page 905: ...Figure 112 Single and Double Tag First byte TPID Match Service Provider Bridging 905 ...
Page 979: ...6 Member not present 7 Member not present Stacking 979 ...
Page 981: ...storm control Storm Control 981 ...
Page 1103: ...Figure 134 Setup OSPF and Static Routes Virtual Routing and Forwarding VRF 1103 ...
