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CJ Webmaster Forums Forum Index » PHP & MySQL

   
Ip Addresses
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GodfatherUK
CJ-Design.com Moderator



Joined: 17 Sep 2004
Posts: 232
Location: UK

Posted: Fri Oct 28, 2005 5:47 pm    Post subject: Ip Addresses

My internet connection is run through a proxy server.

I have noticed that most of the scripts which call upon an IP address will capture the Proxy IP address if the user is running through one. If they are not then obviously it will grab their actual IP, but there is always the chance that the person is using a proxy.

If you are confident in programming PHP, you could alter the coding in your scripts to work around this little fix to this..

Code:
if ($_SERVER["HTTP_X_FORWARDED_FOR"]) {
   if ($_SERVER["HTTP_CLIENT_IP"]) {
   $proxy = $_SERVER["HTTP_CLIENT_IP"];
  } else {
   $proxy = $_SERVER["REMOTE_ADDR"];
  }
  $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
} else {
  if ($_SERVER["HTTP_CLIENT_IP"]) {
   $ip = $_SERVER["HTTP_CLIENT_IP"];
  } else {
   $ip = $_SERVER["REMOTE_ADDR"];
  }
}


To see this in action, simply visit http://www.godfatheruk.com/?page=tools&id=ip
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GodfatherUK
CJ Designs Forum Moderator

"I dont think i am good at coding.. But i KNOW im good at helping"
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PHPDUMMY
CJ-Design.com Moderator



Joined: 09 Mar 2005
Posts: 569
Location: South East Kentucky,U.S.A.

Posted: Thu Nov 03, 2005 12:12 pm    Post subject:

that was a rather large topic i remember reading about on the php.net site.It was between internal IP#'s and proxy#'s.....

did you know that one of the most common security breaches is giving away your internal IP#'s?

a hacker needs your IP# , if you're networked (most homes have 2 or more computers networked now) then the hacker also needs your internal paths , thus your internal IP#'s for each computer behind the network in order for him to begin hacking the computer.

it is a real common error for computer users to reveal the internal IP#'s
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Danny
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