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  1. POCannot get user IP address (proxy/firewall/load balancer)
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    <p>I used code below to get client ip with asp.net before but after I moved to VDS this function begin returning only my subnet mask which is 178.18.198.1 or 178.18.198.2. Can anyone help me with this problem?</p> <pre><code>Private Function GetIPAddress() As String Dim sIPAddress As String = Nothing sIPAddress = Request.ServerVariables("HTTP_X_FORWARDED_FOR") If String.IsNullOrEmpty(sIPAddress) Then sIPAddress = Request.ServerVariables("REMOTE_ADDR") End If Return sIPAddress End Function </code></pre> <p><strong>EDIT</strong></p> <p>Found similar problem <a href="http://forums.iis.net/t/1175435.aspx">here</a>:</p> <blockquote> <p>Have deployed many 2008 32 bit standard web servers using the citrix netscaler isapi (the netscaler being a load balancer), in all cases the client IP address is logged in the standard IIS logs. On a new project I was asked to deploy 2008 R2, configured IIS 7.5 identically with how I configured IIS 7.0 in the past, this time however the client ip is returning the load balancer address in the logs. Here is the weird part, I installed "advanced logging" and it is showing the client IP address properly, so the isapi is doing its job. Have googled this one to death and could use some advice.</p> </blockquote> <p>I also found ISAPI Filter module but cannot make it work: <a href="http://devcentral.f5.com/weblogs/Joe/archive/2009/08/19/x_forwarded_for_log_filter_for_windows_servers.aspx">devcentral.f5.com/x_forwarded_for_log_filter_for_windows_servers</a></p>
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