Contributing

How do I configure IIS Web authentication in Windows Server 2012?

How do I configure IIS Web authentication in Windows Server 2012?

Windows Server 2012 or Windows Server 2012 R2 Select the installation type and click Next. Select the destination server and click Next. On the Server Roles page, expand Web Server (IIS), expand Web Server, expand Security, and then select Windows Authentication. Click Next.

How do I enable Windows authentication in IIS?

Enabling Windows authentication in IIS

  1. Go to Control Panel -> Programs and Features -> Turn windows features on or off.
  2. Expand Internet Information Services -> World Wide Web Services.
  3. Under Security, select the Windows Authentication check box.
  4. Click OK to finish the configuration.

How do I troubleshoot NTLM authentication?

Resolution

  1. Ensure that NetBIOS Name Resolution is enabled on the Domain Controller to which the Web Gateway is sending the NTLM requests.
  2. Ensure that NTLM 401 Authentication is allowed on the Domain Controller.
  3. Check the LDAP Authentication.
  4. Check the NTLM settings.
  5. Check the client browser settings.
  6. Check the DNS settings.

How do I install Windows authentication component for IIS?

In the Web Server (IIS) pane, scroll to the Role Services section, and then click Add Role Services. On the Select Role Services page of the Add Role Services Wizard, select Windows Authentication, and then click Next. On the Confirm Installation Selections page, click Install.

Why does Kerberos fail authentication?

This problem can occur when a domain controller doesn’t have a certificate installed for smart card authentication (for example, with a “Domain Controller” or “Domain Controller Authentication” template), the user’s password has expired, or the wrong password was provided.

Is NTLM the same as Windows authentication?

NTLM was replaced as the default authentication protocol in Windows 2000 by Kerberos. However, NTLM is still maintained in all Windows systems for compatibility purposes between older clients and servers.

What is the main difference between NTLM and net NTLMv2?

NTLMv2 (A.K.A. Net-NTLMv2) This is the new and improved version of the NTLM protocol, which makes it a bit harder to crack. The concept is the same as NTLMv1, only different algorithm and responses sent to the server.

Why is Windows Authentication not working in IIS?

To ensure that IIS uses Windows Authentication, I think you should try to turn of other authtentication methods. If Anonymous Authentication is enabled, Windows authentication will not work. You can also read this Microsoft Support Article which describes IE and IIS requirements in details. I got this error when I enabled Windows authentication.

How to troubleshoot Kerberos authentication failure in IIS?

When you troubleshoot Kerberos authentication failure, we recommend that you simplify the configuration to the minimum. That is, one client, one server, and one IIS site that’s running on the default port. Additionally, you can follow some basic troubleshooting steps. For example, use a test page to verify the authentication method that’s used.

Why was kernel mode authentication introduced in IIS 7?

Kernel mode authentication is a feature that was introduced in IIS 7. It provides the following advantages: Performance is increased because kernel-mode-to-user-mode transitions are no longer made. Kerberos ticket decoding is made by using the machine account (not by using application pool identity).

What is the default setting for Windows Authentication?

Apparently when using Windows authentication and the default setting ( UseAuthenticatedUser ), some file access is performed using the permissions of the user browsing the site, and some file access is performed using the permissions of the application pool identity.