Antispam (pun_admin_antispam)

PunBB 1.3 official extension

• Status: Under development
• Current version: 0.1

Protect the forum using CAPTCA from

• Bruteforcing the passwords
• Spam in guest posts
• Bot registration

• Put CAPTCHA at the Register, Guest post, Password restore and Login pages.
• Add options to Administration ⇒ Settings ⇒ Features
  • Use CAPTCHA on register page (checkbox, checked by default)
  • Use CAPTCHA on guest posting (checkbox, checked by default)
  • Use CAPTCHA after 5 login failures (checkbox, checked by default)
  • Use CAPTCHA on password restore form (checkbox, checked by default)
• Add database table <db_prefix>_config
  • o_pun_antispam_captcha_register = 1
  • o_pun_antispam_captcha_guestpost = 1
  • o_pun_antispam_captcha_login = 1
  • o_pun_antispam_captcha_restorepass = 1
• CAPTCHA implementation
  • Use sessions to store the code.
  • Delay before image output (1 s).
  • When the test is passed by the user, do not ask again it again on other pages for some time (or until user does something suspicious).
  • TODO: Describe how the code will be modified against bots.
  • IDEA: Use the words list? E.g. “punbb”, “forum”, “guest”, “user” and s.o.
  • IDEA: Use the empty invisible field with title like “do not fill this”. If filled, this is a bot.
  • IDEA: Use math captcha.