Cisco Systems ASA5515K9, ASA 5500 Configuring RADIUS Authorization

38-14

Cisco ASA 5500 Series Configuration Guide using the CLI

Chapter38 Configuring AAA Rules for Network Access

Configuring Authorization for Network Access

hostname(config-aaa-server-host)# key TACPlusUauthKey

hostname(config-aaa-server-host)# exit

hostname(config)# aaa authentication match TELNET_AUTH inside AuthOutbound

hostname(config)# aaa authorization match SERVER_AUTH inside AuthOutbound

Configuring RADIUS Authorization

When authentication succeeds, the RADIUS protocol returns user authorizations in the access-accept

message sent by a RADIUS server. For more information about configuring authentication, see the

“Configuring Network Access Authentication” section on page 38-4.

When you configure the ASA to authenticate users for network access, you are also implicitly enabling

RADIUS authorizations; therefore, this section contains no information about configuring RADIUS

authorization on the ASA. It does provide information about how the ASA handles access list

information received from RADIUS servers.

You can configure a RADIUS server to download an access list to the ASA or an access list name at the

time of authentication. The user is authorized to do only what is permitted in the user-specific access list.

Note If you have used the access-group command to apply access lists to interfaces, be aware of the following

effects of the per-user-override keyword on authorization by user-specific access lists:

•Without the per-user-override keyword, traffic for a user session must be permitted by both the

interface access list and the user-specific access list.

•With the per-user-override keyword, the user-specific access list determines what is permitted.

For more information, see the access-group command entry in the command reference.

This section includes the following topics:

•Configuring a RADIUS Server to Send Downloadable Access Control Lists, page 38-14

•Configuring a RADIUS Server to Download Per-User Access Control List Names, page38-18

This section describes how to configure Cisco Secure ACS or a third-party RADIUS server and includes

the following topics:

•About the Downloadable Access List Feature and Cisco Secure ACS, page38-14

•Configuring Cisco Secure ACS for Downloadable Access Lists, page38-16

•Configuring Any RADIUS Server for Downloadable Access Lists, page38-17

•Converting Wildcard Netmask Expressions in Downloadable Access Lists, page38-18

Downloadable access lists is the most scalable means of using Cisco Secure ACS to provide the

appropriate access lists for each user. It provides the following capabilities:

•Unlimited access list size—Downloadable access lists are sent using as many RADIUS packets as

required to transport the full access list from Cisco Secure ACS to the ASA.