Comments for Getting The Real IP Of Your Users

HTTP_X_FORWARDED_FOR Can and will return multiple IP addresses. Like So
11.11.11.2, 41.241.135.194, 198.54.202.74
Could you tell me which is the correct address?

isn't the last one? i mean the last ip address returned.

hi

thank you for your post

I am new to VS and I am getting an error during compilation saying that Request instance not found in Request.ServerVariables("HTTP_X_FORWARDED_FOR") , am I missing a library declaration?

I've tried using your code in C#, but I still get a lot of those IP: 172.17.1.1 for different visitors.

Do you know why I'd get it?

Cheeers

Dmitri

hi i have tried all mehtods to get Ip like Request.ServerVariables[''REMOTE_ADDR] Requst.UserHostAddress all are working fine on my local or lab web server... but when i have launched it on my web server with OS Window 2003 server it is picking its own Ip only

The coldfusion example doesnt work. The "forwarded_for" variable doesnt exist - even though I am behind a proxy.

Doh!

HTTP_X_FORWARDED_FOR can be easily faked, you have been warned.