FTP 7.5 Authentication ASP.NET membership Problem

Posted on 2010-09-21
Medium Priority
Last Modified: 2013-12-02
I'm running a Windows 2008 R2 server with IIS and FTP 7.5.  I want to use ASP.NET membership authentication to authenticate FTP users.

Followed this article for configuration: http://learn.iis.net/page.aspx/389/configuring-ftp-with-net-membership-authentication/  I'm using a SQL authentication connection string since connecting from a DMZ web server through firewall to SQL server.  Using FTP 7.5 (64-bit site) with SQL 2008 as backend.  The ASPNETDB database is configured and IIS Manager can add and remove .NET users and roles to it without issue.  The issue comes when trying to initiate an FTP connection.  In IIS, the user has been granted privileges to the FTP site (Authorization Rule), Forms authentication is enabled, and FTP Authentication has been configured (all per the article), however, when a FTP connection is attempted, the FTP client returns error "530 User cannot log in" after the USER and PASS commands.  It shows the same in the FTP server logs:

2010-09-21 18:31:04 - 21 USER ftpuser 331 0 0 a851d7ec-e431-4295-9b23-031b03699371 -
2010-09-21 18:31:04 - 21 PASS *** 530 2148734217 41 a851d7ec-e431-4295-9b23-031b03699371 -
2010-09-21 18:31:04 - 21 ControlChannelClosed - - 0 0 a851d7ec-e431-4295-9b23-031b03699371 -

The login attempts are not iterating in the ASPNETDB table.  In fact, the application pool is not attempting to contact the membership database in SQL.  I confirmed this with SQL Profiler and Wireshark.  I expect the asp.net membership to authenticate the user by talking to the SQL server, but that's not happening.  Windows authentication is not an option due to the firewalled environment.  I've searched many articles, but I've not found a solution.  Nothing in event viewer.  I tried using ProcMon to see if any file or folder access problems....don't see any.  I also confirmed that I could authenticate via an aspx login page using the same user and password with forms authentication, which succeeded..  So, it's only the FTP part that won't authenticate through asp.net membership.  Here's the configuration section from the web.config (connection string excluded):

<membership defaultProvider="FtpSqlMembershipProvider">
            <add name="FtpSqlMembershipProvider"
        passwordAttemptWindow="10" />

      <roleManager defaultProvider="FtpSqlRoleProvider" enabled="true">
            <add name="FtpSqlRoleProvider"
               applicationName="/" />

FTP authentication has the Custom provider "AspNetAuth" enabled per the configuration article mentioned in the beginning of the post.  It seems there may be a missing connection between this provider and the custom providers configured above.  The article I followed assumes the SQL database is on the local host and it's using Windows Authentication, but I'm doing just the opposite...remote SQL with SQL authentication.  There's a section of the article that talks about giving the Application Pool identity permission to SQL, but I obviously can't do that in a DMZ/firewalled environment.  Also, Network Service is no longer used in Windows Server 2008 R2.  

 I verified the firewall wasn't causing the issue by disabling it.  Please give any insight possible.  Thanks.
Question by:Russell64
1 Comment

Accepted Solution

Russell64 earned 0 total points
ID: 33784002

Featured Post

Simplify Active Directory Administration

Administration of Active Directory does not have to be hard.  Too often what should be a simple task is made more difficult than it needs to be.The solution?  Hyena from SystemTools Software.  With ease-of-use as well as powerful importing and bulk updating capabilities.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Background Information Recently I have fixed file server permission issues for one of my client. The client has 1800 users and one Windows Server 2008 R2 domain joined file server with 12 TB of data, 250+ shared folders and the folder structure i…
Understanding the various editions available is vital when you decide to purchase Windows Server 2012. You need to have a basic understanding of the features and limitations in each edition in order to make a well-informed decision that best suits …
This tutorial will give a an overview on how to deploy remote agents in Backup Exec 2012 to new servers. Click on the Backup Exec button in the upper left corner. From here, are global settings for the application such as connecting to a remote Back…
This tutorial will show how to configure a new Backup Exec 2012 server and move an existing database to that server with the use of the BEUtility. Install Backup Exec 2012 on the new server and apply all of the latest hotfixes and service packs. The…
Suggested Courses

597 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question