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8.1

Error using ActiveDirectoryMembershipProvider in DMZ

Asked by vtinfo in Programming for ASP.NET, .Net Editors & IDEs, Microsoft IIS Web Server

Tags: ASP.NET

I am trying to utilize the ActiveDirectoryMembershipProvider for the security on a site I am working on. In the past I have just used Forms authentication and written my own LDAP code to authenticate a user off the Active Directory. However, when I try to use the built in ActiveDirectoryMembershipProvider I keep getting the error "The specified domain or server could not be contacted."

The server running the ASP.NET site is in the DMZ with port 389 open. I can test that the port is open and that the Web Server can access the Domain Server. The code I have written to test this creates a DirectoryEntry using the same connection info as below. Also, I am able to test this connection with Ldp.exe and everything checks out.

Attatched is what I have in my web.config file. I set the ADService Connection String to the Domain server behind the firewall using port 389, which is open. Then in my provider is set the connectionProtection to "none" to force the provider to use port 389. However, when I try to use the built in login server control I get the error noted above. This site works internally on a server in the LAN, so I am confused as to why it will not function. I am sure that I completely overlooked something, so any suggestions are appreciated.

Thanks,
Chris 
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<membership defaultProvider="iDIGActiveDirectoryMembershipProvider">
 
      <providers>
 
        <add name="iDIGActiveDirectoryMembershipProvider"
          type="System.Web.Security.ActiveDirectoryMembershipProvider,     System.Web, Version=2.0.0.0, Culture=neutral,  PublicKeyToken=b03f5f7f11d50a3a"
          connectionStringName= "ADService"
          connectionProtection="None"
          attributeMapUsername="sAMAccountName"
          connectionUsername="mydomain\administrator"
          connectionPassword="******"
          />
 
      </providers>
 
</membership>
<connectionStrings>
 
    <add name ="ADService" connectionString="LDAP://192.168.10.11:389" />
 
  </connectionStrings>
[+][-]05/14/08 07:23 AM, ID: 21564510Accepted Solution

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About this solution

Zones: Programming for ASP.NET, .Net Editors & IDEs, Microsoft IIS Web Server
Tags: ASP.NET
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Solution Provided By: TornadoV
Participating Experts: 1
Solution Grade: A
 
[+][-]05/06/08 08:21 AM, ID: 21508077Expert Comment

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