Configuring authorization methods for an ISP domain
In AAA, authorization is a separate process at the same level as authentication and accounting. Its responsibility is to send authorization requests to the specified authorization servers and to send authorization information to users after successful authorization. Authorization method configuration is optional in AAA configuration.
AAA supports the following authorization methods:
No authorization (none)—The NAS performs no authorization exchange. After passing authentication, non-login users can access the network, FTP users can access the root directory of the NAS, and other login users have Level 0 (visiting) access.
Local authorization (local)—The NAS performs authorization according to the user attributes configured for users.
Remote authorization (scheme)—The NAS cooperates with a RADIUS or HWTACACS server to authorize users. RADIUS authorization is bound with RADIUS authentication. RADIUS authorization can work only after RADIUS authentication is successful, and the authorization information is carried in the Access-Accept message. HWTACACS authorization is separate from HWTACACS authentication, and the authorization information is carried in the authorization response after successful authentication. You can configure local authorization or no authorization as the backup method, which is used when the remote server is not available.
Configuration prerequisites
Before configuring authorization methods, complete the following tasks:
For HWTACACS authorization, configure the HWTACACS scheme to be referenced first. For RADIUS authorization, the RADIUS authorization scheme must be the same as the RADIUS authentication scheme. Otherwise, it does not take effect.
Determine the access type or service type to be configured. With AAA, you can configure an authorization scheme for each access type and service type to limit the authorization protocols that can be used for access.
Determine whether to configure an authorization method for all access types or service types.
Configuration guidelines
When configuring authorization methods, follow these guidelines:
To configure RADIUS authorization, you must also configure RADIUS authentication, and reference the same RADIUS scheme for RADIUS authentication and authorization. If the RADIUS authorization configuration is invalid or RADIUS authorization fails, the RADIUS authentication also fails. If RADIUS authorization fails, the server sends an error message to the NAS, indicating that the server itself is not responding.
You can configure a default authorization method for an ISP domain. This method is used for all users who support the authorization method and have no specific authorization method configured.
You can configure local authorization (local) or no authorization (none) as the backup for remote authorization that is used when the remote authorization server is unavailable.
Local authorization (local) and no authorization (none) cannot have a backup method.
Configuration procedure
To configure authorization methods for an ISP domain:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter ISP domain view. | domain isp-name | N/A |
3. Specify the default authorization method for all types of users. | authorization default { hwtacacs-scheme hwtacacs-scheme-name [ local ] | local | none | radius-scheme radius-scheme-name [ local ] } | Optional. The default authorization method is local for all types of users. |
4. Specify the command authorization method. | authorization command { hwtacacs-scheme hwtacacs-scheme-name [ local | none ] | local | none } | Optional. The default authorization method is used by default. |
5. Specify the authorization method for LAN users. | authorization lan-access { local | none | radius-scheme radius-scheme-name [ local | none ] } | Optional. The default authorization method is used by default. |
6. Specify the authorization method for login users. | authorization login { hwtacacs-scheme hwtacacs-scheme-name [ local ] | local | none | radius-scheme radius-scheme-name [ local ] } | Optional. The default authorization method is used by default. |
7. Specify the authorization method for portal users. | authorization portal { local | none | radius-scheme radius-scheme-name [ local ] } | Optional. The default authorization method is used by default. |