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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter       Configuring Security Features
Configuring VPN
Enable Policy Lookup
To enable policy lookup through AAA, follow these steps, beginning in global configuration mode.
SUMMARY STEPS
1. aaa new-model
2. aaa authentication login {default | list-name} method1 [method2...] 
3. aaa authorization {network | exec | commands level | reverse-access | configuration} {default | 
list-name} [method1 [method2...]]
4. username name {nopassword | password password | password encryption-type 
encrypted-password}
DETAILED STEPS
Command or Action Purpose
Step 1
aaa new-model
Example:
Router(config)# aaa new-model
Router(config)# 
Enables the AAA access control model.
Step 2
aaa authentication login {default | list-name} 
method1 [method2...] 
Example:
Router(config)# aaa authentication login 
rtr-remote local
Router(config)# 
Specifies AAA authentication of selected users at 
login, and specifies the method used.
This example uses a local authentication database. 
You could also use a RADIUS server for this. For 
details, see Cisco IOS Security Configuration 
Guide: Securing User Services, Release 2.4T and 
Cisco IOS Security Command Reference.
Step 3
aaa authorization {network | exec | commands 
level | reverse-access | configuration} {default | 
list-name} [method1 [method2...]]
Example:
Router(config)# aaa authorization network 
rtr-remote local
Router(config)# 
Specifies AAA authorization of all 
network-related service requests, including PPP, 
and specifies the method of authorization.
This example uses a local authorization database. 
You could also use a RADIUS server for this. For 
details, see Cisco IOS Security Configuration 
Guide: Securing User Services, Release 2.4T and 
Cisco IOS Security Command Reference.
Step 4
username name {nopassword | password 
password | password encryption-type 
encrypted-password}
Example:
Router(config)# username username1 password 
0 password1
Router(config)# 
Establishes a username-based authentication 
system.
This example implements a username of 
username1 with an encrypted password of 
password1.