C# How to spoof IP address for WebRequest
<p>I have asp.net website hosted and I am making WebRequest to post data and get response. The website is having IP filtering. I want to spoof sender IP address for testing purpose. Is it possible to do it programmatically or I have to use any tool.</p>

<pre><code>public string GetResponse(string request)
{  
    lock (Obj)  
    {  
        request = request + _dataControlInfo.SendEndingWith;  
        Logger.Info(request);  
        var req = (HttpWebRequest)WebRequest.Create(_serviceUrl);  
        req.Headers.Add("SOAPAction", "\"\"");  
        req.ContentType = "text/xml;charset=\"utf-8\"";  
        req.Accept = "text/xml";  
        req.Method = "POST";  
        var stm = req.GetRequestStream();  
        var bytes = UtfEncoding.StringToUtf8ByteArray(request);  
        stm.Write(bytes, 0, bytes.Length);  
        stm.Close();  
        var resp = req.GetResponse();  
        var stmr = new StreamReader(resp.GetResponseStream());  
        var strResponseXml = stmr.ReadToEnd();  
        Logger.Info(strResponseXml);  
        return strResponseXml;  
    }  
}  
</code></pre>

<p>Please specify any possibilities.</p>
