Captcha¶
Presentation¶
Captcha is a security mechanism to prevent forms from being submited by robots.
Captchas are available on following forms:
- Login form: where user inputs login and password for authenticating
- Password reset by mail form: where user inputs mail to recover a forgotten password
- Register form: where user inputs information to create a new account
Attention
We use the GD::SecurityImage Perl module to generate images. This module is required if you enable Captcha feature. With Debian-based distributions, you may have to install ‘gsfonts’ package.
Configuration¶
Go in General parameters > Portal > Captcha:
- Activation in login form: set to 1 to display captcha in login form
- Activation in password reset by mail form: set to 1 to display captcha in password reset by mail form
- Activation in register form: set to 1 to display captcha in register form
- Size: define captcha length
- Captcha module: allows you to use a custom Captcha module, see below. Leave it blank to use the default Captcha implementation
- Captcha module options: options for the custom Captcha module
Custom Captcha modules¶
New in version 2.0.15.
If the default Captcha does not meet your requirements, you can replace it with
a different implementation. See the Lemonldap::NG::Portal::Captcha manual
page for details on how to implement a Captcha module.