To get up and running, it is necessary to configure the Seam Resource Servlet, which will provide the Captcha challenge images to your pages. This requires the following entry in web.xml:

<servlet>
    <servlet-name>Seam Resource Servlet</servlet-name>
    <servlet-class>org.jboss.seam.servlet.ResourceServlet</servlet-class>
</servlet>
    
<servlet-mapping>
    <servlet-name>Seam Resource Servlet</servlet-name>
    <url-pattern>/seam/resource/*</url-pattern>
</servlet-mapping>