Paul Furman kirjoitti:
> Varn wrote:
>
>> Hi all,
>>
>> I've got a website coded in PHP, and a malicious person is
>> posting fake spam messages to a low-security forum that I've coded.
>> My forum code simply reads the POST data and in good faith
>> posts the message to the forum and records the IP of the poster.
>> Here is what is happening. Bogus messages are being posted
>> always of roughly the same type or message, often with
>> bogus URLs in them, and the IP address that I am recording
>> is always random i.e. spoofed.
>
> If it's an automated spam, you may have to install one of those things
> with the wiggly jpeg letters & numbers to be re-typed by a live human. I
> know someone who had to install something like that, I think it was a
> simple plugin sort of deal. Sorry I'm not more specific.

You're talking about the Turing test, aka. Captcha:
http://en.wikipedia.org/wiki/CAPTCHA

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