Why not create a cookie for that poll. When the vote check for the cookie. Unless a user clears the cookie himself, you basically limit votes to one per computer or one per computer per user.
Bruce Karstedt President Technology Consulting Associates, Ltd. Tel: 847-735-9488 Fax: 847-735-9474 -----Original Message----- From: Rasmus Lerdorf [mailto:[EMAIL PROTECTED]] Sent: Saturday, June 29, 2002 10:34 PM To: JJ Harrison Cc: [EMAIL PROTECTED] Subject: Re: [PHP] Getting IP from behind proxies Importance: Low You need to assign each person a unique identifier of some sort. ie. assign them a login and password and verify that information by sending a message to their email address. Then only people with multiple email addresses can spam your system with votes. Beyond that it comes down to verifying each voter manually. Get a phone number and call each one up. Even that is not quite foolproof. Personal certificates might be an option here, but that is rather cumbersome for everyone involved. Basically there is no good solution for this problem. Until everyone in the world has a unique and non-spoofable, easily verifiable id number, what you are trying to do is impossible. Basically live with the fact that your voting system will be inaccurate and spoofable. -Rasmus On Sun, 30 Jun 2002, JJ Harrison wrote: > what esle could i use? > "Rasmus Lerdorf" <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > You can only get it if the proxy provides you with this data. Most don't, > > so this is not a reliable approach. > > > > -Rasmus > > > > On Sat, 29 Jun 2002, JJ Harrison wrote: > > > > > I want to check to see if people have voted yet for a poll. > > > > > > How can I get the ip of a user from both behind a proxy and the proxies > ip? > > > > > > is this simple? > > > > > > will i have trouble with firewalls etc? > > > > > > > > > -- > > > JJ Harrison > > > [EMAIL PROTECTED] > > > www.tececo.com > > > > > > > > > > > > -- > > > PHP General Mailing List (http://www.php.net/) > > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
