I'm trying http://www.webdavsystem.com/ajaxfilebrowser on Windows server 2012 and IIS 8.0.
I'm using WebDAV with anonymous access but my server require authentication when I try to Upload, delete etc...
Is there any way to bypass authentication?
Related
I'm trying to understand the IIS windows and anonymous authentications. is there any difference between below options,
Anonymous
Anonymous + windows
Anonymous authentication gives users access to the public areas of your Web or FTP site without prompting them for a username or password. By default, the IUSR account, which was introduced in IIS 7.0 and replaces the IIS 6.0 IUSR_computername account, is used to allow anonymous access
Windows authentication, Identifies and authorizes users on the server's user list. Access to resources on the server is then granted or denied on the user account's privileges. Windows authentication is best suited for intranet web applications. The advantage of Windows authentication is that the web application can use the exact same security that applies to your corporate network. username, passwords, and permissions are the same for network resources and web applications
If both anonymous and windows authentication is enabled in IIS, and if we don't have a deny entry or anonymous in the web config then the resources on the web server are accessed using anonymous authentication
As long as anonymous authentication is enabled, IIS uses it, no matter whatever else you configure.
I'm trying to set up impersonation/delegation for a web application using ASP.NET 4.5/SQL Server 2016. The goal is to use the Windows authentication on the web application and the SQL Server.
I reproduced on Azure a setup similar to the one which will be used for production, but I can't seem to find what is making the impersonation not working.
Azure VM #1 [machine name: test-iis-server]: Windows Server 2012 running IIS 8.5 and acting as Active Directory Domain Controller
Azure VM #2 [machine name: test-sql-server]: Windows Server 2016 running SQL Server 2016
Azure VM #3 [machine name: test-client]: Windows 10 machine for simulating a user connecting to the website
I created an Active Directory domain named TEST. It is possible to connect to the 3 machines with users created in Active Directory.
IIS Web server configuration:
In the web.config file:
Authentication mode = Windows
Identity impersonate = True
validation validateIntegratedModeConfiguration = False
Integrated security = SSPI
In IIS Manager:
Windows authentication = Enabled (Kernel-mode authentication = Disabled, Providers = Negotiate:Kerberos)
ASP.NET Impersonation = Enabled
Application pool = Integrated Managed Pipeline (Identity = Custom Identity: test\my-svc-account)
In Active Directory Users & Computers
For each computers (web server, sql server and user computer), I went into Properties and checked in the Delegation tab Trust this
computer for delegation to any service (Kerberos only).
SQL Server Configuration
I did not setup anything here. I assumed that ASP.NET will use the credentials of the user logged in the web application to access the
SQL Server database.
Edit: SQL Server service account: test\my-svc-account
Results:
If I don't use impersonation in the web application and use a defined user/pwd login created in SQL Server, my application works normally and I can get the Windows user credential if I want.
Using impersonation, I get a SQL Server connection error when I open the web application page: Login failed for user 'TEST\test-iis-server$'.
Expected behavior:
The web application will log into SQL Server using the credentials used to log into the "test-client" machine.
I've read a lot on how to implement the impersonation/delegation for my solution, but can't seem to find what's wrong. Anyone has any idea where the proble might come from and how I can resolve it?
Edit #1:
From what I've read, it seems like I need to setup SPNs. I'm confused about how to set them up correctly for my double-hop scenario.
I have created a user account in Active Directory to act as a service account. I've set this account to be trusted for delegation.
I use this account as the identity for my application pool in IIS and as the service account of the SQL Server instance.
Yes, you do need to configure SPNs for both the ASP.NET app pool identity, and the SQL Server service account.
It's relatively straightforward, but you need to make sure you get the right values.
In AD Users and Computers find the 'my-svc-account' account and open the properties. Navigate to the attribute editor tab (if you don't see it, enable advanced features through the ADUC 'View' menu). Find the servicePrincipalName attribute and edit it. Add the following:
http/servicename.foo.com
http/servername <== optional
Where service.foo.com matches your DNS name. If this is a CNAME, you need to also include the underlying A record name as well. So if servicename.foo.com maps to whatever.cloudapp.net, you need to add an SPN for whatever.cloudapp.net. This is for IE, because IE is ...dumb... and trying to be smart (it resolves the DNS down to lowest named record and requests an SPN for that).
Then do the same for the SQL Server service account.
MSSQLSvc/sqlserver.foo.com
MSSQLSvc/sqlserver <== optional
This needs to be the FQDN of the SQL Server host.
Lastly, you need to enable Constrained Delegation between the App Pool identity and the SQL Server service account. This is the 3rd radio button in the delegation control. Add the SQL Server SPN as a delegated target.
Restart IIS and SQL. Try browsing to the app. You should now see it connect to SQL as your named user.
I have created a group on AD, and configured this group to have access to my SQL Server. With it, any .Net app, SQL Server and SSIS are able to connect to SQL Server using any AD account that's on that group, they just need to set Trusted Connection/Windows Authentication.
Now I need to do the same on IIS apps. But I have never configured IIS and don't know how to do it. I Googled it, but everything refers to user authenticating to IIS using NTLM, not IIS connecting to SQL Server.
For Server2008 and higher you will likely want to use Application Pool Identity. This article helped get me going when I set up an IIS / SQL Application.
http://www.iis.net/learn/manage/configuring-security/application-pool-identities
EDIT:
Specifically where it demonstrates how to use a built in account there is an option to choose a custom account.
https://thycotic.force.com/support/s/article/Running-Secret-Server-IIS-Application-Pool-with-a-Service-Account
EDIT2:
Using windows auth - https://blogs.msdn.microsoft.com/chiranth/2014/04/17/setting-up-kerberos-authentication-for-a-website-in-iis/
I have IIS 7 (Windows Server 2008 R2) and TFIM front-ending the users so that by the time the request hits IIS there's a SAML token presented via WS-Fed.
What I am trying to understand is, what's needed to be installed or configured on the IIS side to consume this token?
Do you have to change the Authentication module in IIS to something else? Anything else?
Do I need to install anything in particular?
In the Microsoft world, applications that use an STS (like ADFS or TFIM) that uses the WS-Federation protocol to authenticate use WIF to process the claims that are enclosed in the SAML token.
There's nothing IIS specific.
We've deployed an asp.net site and WCF services in IIS, and can access the site and services remotely with no issues. We have site bindings set up in order that for remote calls we're using https, and we use the URL Rewrite IIS add-in to redirect requests to https if they are http requests. All requests are working remotely, however when we actually log onto the Windows 2008 Server, open up IIS 7.5 and try to browse the content locally on the server we get a credential challenge Title: "Windows Security" Message: "Connecting to {server name}" with ok/cancel buttons.
I'm logged into the server with the same credentials that I'm accessing the web site on from my local machine.
Any ideas?
The error message that come is as below:
The HTTP request is unauthorized with client authentication scheme 'Negotiate'.
The authentication header received from the server was 'NTLM,Negotiate'.
As mentioned this error does not come when the service is accessed remotely. This only happens while calling the service from the server where it is hosted. Probably some setting in IIS?
As the Exception says, the authentication schemes do not match. Your client does not offer NTLM. Please check the internet explorer enhanced security configuration and see if it is active or see if it is restricted otherwise to use NTLM.