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Cisco ASA Series CLI Configuration Guide
 
Chapter 1      Configuring Connection Profiles, Group Policies, and Users
  Configuring Connection Profiles
Note Allowing override-account-disable is a potential security risk.
Step 11 Specify the attribute or attributes to use in deriving a name for an authorization query from a certificate. 
This attribute specifies what part of the subject DN field to use as the username for authorization:
hostname(config-tunnel-general)# authorization-dn-attributes {primary-attribute 
[secondary-attribute] | use-entire-name}
For example, the following command specifies the use of the CN attribute as the username for 
authorization:
hostname(config-tunnel-general)# authorization-dn-attributes CN
hostname(config-tunnel-general)# 
The authorization-dn-attributes are C (Country), CN (Common Name), DNQ (DN qualifier), EA 
(E-mail Address), GENQ (Generational qualifier), GN (Given Name), I (Initials), L (Locality), 
N (Name), O (Organization), OU (Organizational Unit), SER (Serial Number), SN (Surname), 
SP (State/Province), T (Title), UID (User ID), and UPN (User Principal Name).
Step 12 Specify whether to require a successful authorization before allowing a user to connect. The default is 
not to require authorization.
hostname(config-tunnel-general)# authorization-required
hostname(config-tunnel-general)# 
Configuring Double Authentication
Double authentication is an optional feature that requires a user to enter an additional authentication 
credential, such as a second username and password, on the login screen. Specify the following 
commands to configure double authentication.
Step 1 Specify the secondary authentication server group. This command specifies the AAA server group to use 
as the secondary AAA server. 
Note  This command applies only to AnyConnect client VPN connections.
The secondary server group cannot specify an SDI server group. By default, no secondary authentication 
is required.
hostname(config-tunnel-general)# secondary-authentication-server-group [interface_name] 
{none | LOCAL | groupname [LOCAL]} [use-primary-name]
If you use the none keyword, no secondary authentication is required. The groupname value specifies 
the AAA server group name. Local specifies the use of the internal server database, and when used with 
the groupname value, LOCAL specifies fallback. For example, to set the primary authentication server 
group to sdi_group and the secondary authentication server group to ldap_server, enter the following 
commands:
hostname(config-tunnel-general)# authentication-server-group
hostname(config-tunnel-general)# secondary-authentication-server-group