Cisco 7604 Configuration Guide - Page 352
Disabling Authentication Challenge per Protocol, aaa authentication, secure-http-client
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Configuring Authentication for Network Access Chapter 17 Applying AAA for Network Access static (inside,outside) tcp 10.132.16.200 443 10.130.16.10 443 • HTTP users see a pop-up window generated by the browser itself if aaa authentication secure-http-client is not configured. If aaa authentication secure-http-client is configured, a form loads in the browser to collect username and password. In either case, if a user enters an incorrect password, the user is prompted again. When the web server and the authentication server are on different hosts, use the virtual http command to get the correct authentication behavior. To enable secure authentication of web clients, perform the following steps: Step 1 Step 2 Enable HTTP authentication. For more information about enabling authentication, see the "Enabling Network Access Authentication" section on page 17-3. To enable secure authentication of web clients, enter this command: aaa authentication secure-http-client Note Use of the aaa authentication secure-http-client command is not dependent upon enabling HTTP authentication. If you prefer, you can enter this command before you enable HTTP authentication so that if you later enable HTTP authentication, usernames and passwords are already protected by secured web-client authentication. Disabling Authentication Challenge per Protocol You can configure whether the FWSM challenges users for a username and password. By default, the FWSM prompts the user when a AAA rule enforces authentication for traffic in a new session and the protocol of the traffic is FTP, Telnet, HTTP, or HTTPS. In some cases, you may want to disable the authentication challenge for one or more of these protocols, using the following command: hostname(config)# aaa authentication protocol challenge disable For example, to disable the username and password challenge for new connections using FTP, enter the following command: hostname(config)# aaa authentication ftp challenge disable If you disable challenge authentication for a particular protocol, traffic using that protocol is allowed only if the traffic belongs to a session previously authenticated. This authentication can be accomplished by traffic using a protocol whose authentication challenge remains enabled. For example, if you disable challenge authentication for FTP, the FWSM denies new session using FTP if the traffic is included in an authentication rule. If the user establishes the session with a protocol whose authentication challenge is enabled (such as HTTP), FTP traffic is allowed. 17-8 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM OL-20748-01
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