Put captcha and anti-spam prohibited words in Drupal forum?

Can it be done?

I have a forum based on drupal that keeps receiving a lot of spam, because I don't have a captcha upon threads or comments posting, nor do I have a list of prohibited words.

Now I couldn't integrate cap开发者_JAVA技巧tcha nor could I find a module to deny some offensive words.

Any ideas?

I'm using Drupal 6 . thanks

• Use recaptcha
• Go to admin settings, recaptcha and enable the option show captcha admin options on every form
• Go to the form for which you want to enable the recaptcha, you will have admin settings of recaptcha at the bottom to enable or disable. And enable recaptcha

Use module recaptcha and try to execute SQL command INSERT INTO captcha_points VALUES ('forum_node_form', 'recaptcha', 'reCAPTCHA');