Excluding authentication modules
You can exclude certain authentication modules so that users cannot select them for authentication.
Required configuration keys:
To exclude an authentication module
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Log in to the Administration Portal (see Logging in to the Administration Portal).
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In the navigation, click Configuration.
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On the Configuration page, in the Show configuration for the following API project drop-down, select the Web Portal API project.
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Expand the Excluded authentication modules configuration key.
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You can perform the following actions:
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To exclude an authentication module, click Add new and select the relevant authentication module from the selection list.
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To include an authentication module again, click 
(delete) next to the corresponding authentication module.
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Click Apply.
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Perform one of the following actions:
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If you want to apply the changes locally only, click Apply locally.
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If you want to apply the changes globally, click Apply globally.
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Click Apply.
Configuring CAPTCHAs
To improve the security and reliability of your web applications, configure CAPTCHAs for logging in to these web applications. They allow real users to be distinguished from bots.
Detailed information about this topic
Enabling and disabling CAPTCHA login protection
To prevent login attempts by bots or automated requests, you can configure a CAPTCHA test to be required after repeated failed login attempts.
Required configuration keys:
To enable or disable the CAPTCHA login protection for all web applications
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Log in to the Administration Portal (see Logging in to the Administration Portal).
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In the navigation, click Configuration.
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On the Configuration page, in the Show configuration for the following API project drop-down, select the API Server API project.
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Expand the CAPTCHA login protection configuration key.
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Perform one of the following actions:
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To enable CAPTCHA login protection, select the CAPTCHA login protection check box.
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To disable CAPTCHA login protection, clear the CAPTCHA login protection check box.
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Click Apply.
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Perform one of the following actions:
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If you want to apply the changes locally only, click Apply locally.
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If you want to apply the changes globally, click Apply globally.
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Click Apply.
Configuring CAPTCHA fonts
You can specify which of the fonts stored on the API Server are to be used for generating CAPTCHAs.
Required configuration keys:
To configure the fonts to use for generating CAPTCHAs
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Log in to the Administration Portal (see Logging in to the Administration Portal).
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In the navigation, click Configuration.
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On the Configuration page, in the Show configuration for the following API project drop-down, select the API Server API project.
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Expand the CAPTCHA fonts configuration key.
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In the Value field, enter a comma delimited list of the fonts that can be used for generating CAPTCHAs.
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Click Apply.
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Perform one of the following actions:
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If you want to apply the changes locally only, click Apply locally.
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If you want to apply the changes globally, click Apply globally.
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Click Apply.
