How to get X-forwarded-for value in MVC

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I am trying to retrieve value from request header X-FORWARDED-FOR its always returning null, can someone tell me how can we get the value of X-FORWARDED-FOR. Actually I need original(public) ip address of client system

What I have tried:

I am trying to retrieve value from request header X-FORWARDED-FOR its always returning null, can someone tell me how can we get the value of X-FORWARDED-FOR. Actually I need original ip address of client system

Posted 8-Aug-17 9:17am

Code_seeker_

Updated 9-Aug-17 2:21am

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David_Wimbley 8-Aug-17 16:17pm

Can you provide a code sample of how you are attempting to get the value? We don't have access to your code so we don't know what it is you have tried that is causing you to always get null values.

Code_seeker_ 8-Aug-17 16:45pm

Here is my code, do I need to make any changes at IIS level to get X FORWARDED FOR value ?
string strIpAddress;
strIpAddress = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (strIpAddress == null)
{
strIpAddress = Request.ServerVariables["REMOTE_ADDR"];
}
REMOTE ADDRE giving me local IP address which I don't need, all I need is public IP address.

F-ES Sitecore 9-Aug-17 8:31am

That's an optional header, are you sure it's there? There is no sure way to get the client IP address so my advice is to not design anything where the client IP is needed.

Code_seeker_ 27-Aug-17 14:46pm

Then how can I achieve white list IPs for my application

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Kornfeld Eliyahu Peter · Answer 1 · 2017-08-09T02:21:00

Solution 1

There is a difference between ServerVariables[^] and Headers[^]...
You should look for it in the later...

Posted 9-Aug-17 2:21am

Kornfeld Eliyahu Peter