Get user IP Address

Question

I have a web application that has a login. Now what I want is to get the IP address of that end user upon login. I've tried researching but based on what I understood, it gets the ip of my machine not the person that logins. This app is already deployed on a server. And if I do what they said, I will be getting the server's ip address. But I want the IP address of the end user that logs in.

This is a sample of what I've seen.

private string GetIP()
{
    string strHostName = "";
    strHostName = System.Net.Dns.GetHostName();

    IPHostEntry ipEntry = System.Net.Dns.GetHostEntry(strHostName);

    string ipaddress =convert.tostring(ipEntry.AddressList[2]);

    return ipaddress.tostring();

}

I'm not sure if I understood this correctly but I think this will get local ip address, not the ip address of the end user that is logging in. Please do correct me if I'm wrong. Any ideas? Thanks!

possible duplicate of [How to get Public Ip address of a user in C#](http://stackoverflow.com/questions/19285957/how-to-get-public-ip-address-of-a-user-in-c-sharp) — , Aug 05 '14 at 06:24

score 9 · Answer 1 · answered Aug 05 '14 at 06:27

9

Use -

HttpContext.Current.Request.UserHostAddress

answered Aug 05 '14 at 06:27

Subha

1,041
6
12

score 3 · Answer 2 · answered Aug 05 '14 at 08:27

3

Try both :

HttpContext.Current.Request.UserHostAddress;

or

HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];

answered Aug 05 '14 at 08:27

SanDeep

44
1

score 1 · Answer 3 · edited May 23 '17 at 12:14

you can use REMOTE_ADDR and HTTP_X_FORWARDED_FOR from Request.ServerVariables .

The UserHostAddress property is simply a wrapper around the REMOTE_ADDR server variable. So if you user is behind a proxy (or router), this returns only one IP Address, the IP Address of the proxy (or router) .

Red : http://haacked.com/archive/2006/10/11/A_Gotcha_Identifying_the_Users_IP_Address.aspx/

There is another thread in stackoverflow : How to Get IP Address?

Get user IP Address

3 Answers3