On 5/26/05, Dan Rossi [EMAIL PROTECTED] wrote:
Hi there I am mocking up a quick voting poll system, however I would
like to put hooks in place to prevent users posting more than once,
voting bots etc.
You could use a captcha(www.captcha.net afaik), to prevent bots from voting.
Is there a way to prevent them, obviously sessions,
cookies, host ips cant be used as they can be removed, and especially
with host ips , ppl are usually behind a proxy ip that doesnt
forwarding the referring ip.
Proxies usually send the referer using HTTP_X_FORWARDED_FOR. If this
isn't the case, then I don't think there is much other information.
Even if you did have the IP address, you can't tell if its static, or
dynamic.
Let me know if anyone has cooked up
something like this thanks. I have the voting mechanism and result
displaying fine, just the special checks to prevent the form being
displayed.
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