Search Captcha for Guests?

[jasonz9238]

Is there a way or a mod to add a captcha so unregistered guests are required to enter the captcha when searching?

[flapjack]

it's by default in 2.0: Admin/Security settings/Anti spam
for 1.x you might ask author of this mod: http://custom.simplemachines.org/mods/index.php?mod=907