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    <p>So I finally found a solution to my problem.</p> <p>Using this KB article <a href="http://support.microsoft.com/kb/306158" rel="nofollow">"How to implement impersonation in an ASP.NET application / Impersonate a Specific User in Code"</a> I found a way to impersonate my shared hosting <strong>FTP user</strong>.</p> <p>This way I would gain the privileges of the said user and not compromise the security of the server by lowering the security on the <em>NT AUTHORITY\NETWORK SERVICE</em> user.</p> <p>This is the code that I used:</p> <pre><code>using System; using System.Runtime.InteropServices; using System.Security.Principal; using System.Configuration; namespace App_Code { public class Impersonation : IDisposable { private WindowsImpersonationContext _impersonationContext; #region Win32 API Declarations private const int Logon32LogonInteractive = 2; //This parameter causes LogonUser to create a primary token. private const int Logon32ProviderDefault = 0; [DllImport("advapi32.dll")] private static extern int LogonUserA(String lpszUserName, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken); [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] private static extern int DuplicateToken(IntPtr hToken, int impersonationLevel, ref IntPtr hNewToken); [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] private static extern bool RevertToSelf(); [DllImport("kernel32.dll", CharSet = CharSet.Auto)] private static extern bool CloseHandle(IntPtr handle); #endregion public bool ImpersonateDefaultFtpUser() { return ImpersonateFtpUser(ConfigurationManager.AppSettings["ftpUsername"], ConfigurationManager.AppSettings["ftpDomain"], ConfigurationManager.AppSettings["ftpPassword"]); } public bool ImpersonateFtpUser(string userName, string domain, string password) { WindowsIdentity tempWindowsIdentity; var token = IntPtr.Zero; var tokenDuplicate = IntPtr.Zero; if (RevertToSelf()) { if (LogonUserA(userName, domain, password, Logon32LogonInteractive, Logon32ProviderDefault, ref token) != 0) { if (DuplicateToken(token, 2, ref tokenDuplicate) != 0) { tempWindowsIdentity = new WindowsIdentity(tokenDuplicate); _impersonationContext = tempWindowsIdentity.Impersonate(); if (_impersonationContext != null) { CloseHandle(token); CloseHandle(tokenDuplicate); return true; } } } } if (token != IntPtr.Zero) CloseHandle(token); if (tokenDuplicate != IntPtr.Zero) CloseHandle(tokenDuplicate); return false; } public void UndoImpersonation() { if (_impersonationContext != null) _impersonationContext.Undo(); } /// &lt;summary&gt; /// Constructor. Impersonates the default ftp user. Impersonation lasts until /// the instance is disposed. /// &lt;/summary&gt; public Impersonation() { ImpersonateDefaultFtpUser(); } /// &lt;summary&gt; /// Constructor. Impersonates the requested user. Impersonation lasts until /// the instance is disposed. /// &lt;/summary&gt; public Impersonation(string userName, string domain, string password) { ImpersonateFtpUser(userName, domain, password); } #region IDisposable Pattern /// &lt;summary&gt; /// Revert to original user and cleanup. /// &lt;/summary&gt; protected virtual void Dispose(bool disposing) { if (!disposing) return; // Revert to original user identity UndoImpersonation(); if (_impersonationContext != null) _impersonationContext.Dispose(); } /// &lt;summary&gt; /// Explicit dispose. /// &lt;/summary&gt; public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } /// &lt;summary&gt; /// Destructor /// &lt;/summary&gt; ~Impersonation() { Dispose(false); } #endregion } } </code></pre>
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    1. POFile upload fails when user is authenticated. Using IIS7 Integrated mode
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    1. POFile upload fails when user is authenticated. Using IIS7 Integrated mode
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    1. COCan you put more details please? I am having the same problem, I tried to use my FTP credentials inside the <identity> tag but it didn't work.
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    2. COI updated the answer. Hope it helps!
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    3. COIt worked perfectly, I just needed to create an instance `Impersonation i = new Impersonation("FTPusername","some.ip.address.v4","FTPpassword");` Thanks!
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