I am trying to request data from a uri in the form "https://link.sharepoint.com/sites/0001/_api/link" that requires to log in into your windows account to have access.
To test I started using Postman but can't figure out how to use Windows Auth for the request.
Thanks
Hi you should use NTLM authentication
Workstation is your computer hostname and domain is your domain used for windows authetication you can see it in internet explore when authentication pop up comes up
In username passord fields provide the credential you use for login to system
Related
I am wondering if there is anyway to check if the entered username and password is correct despite of enforcing multi factor authentication in Azure Active Directory?
I have set up an app with application permission(with admin consent) as well as delegated permission and is able to test both approach using ConfidentialClient and PublicClient using MSAL library.
I am not able to run my web form app in IIS with the PublicClient approach which is interactive and displays you a popup for the Microsoft login. So, the only approach I see here is to use app-only authentication.(https://learn.microsoft.com/en-us/exchange/client-developer/exchange-web-services/how-to-authenticate-an-ews-application-by-using-oauth )
I can use the confidential client(app only) since I have all the required admin consents granted to get the OAuth token and then impersonate the user to access to EWS managed api.
But the requirement is the user should enter their outlook password in the webform app before loading their emails(from EWS Managed API which needs OAuth token).
At this point I am not sure what to do next. Please help. Also let me know if you need more information.
For more reference why I am no able to use delegated authentication: Why app is throwing error in test environment but working fine in local machine using ASP.NET Web Forms and MSAL?
Per my understanding, you want to check the username and password by Azure AD first and using the confidential client to call APIs on behalf of the user.
This way is something hacking, but I think it works for this scenario. Just try the request below:
POST https://login.microsoftonline.com/<tenant id>/oauth2/v2.0/token
Request Body:
client_id=<confidential client app id>
&Client_secret=<confidential client app sec>
&grant_type=password
&scope=https://graph.microsoft.com/user.read
&username=<username>
&password=<password>
If the user typed the wrong user name and password, the response would be:
If username and password are all right, the response report the MFA related info:
There is a WebAPI hosted in IIS. It is using Windows authentification with NTLM protocol only. If I am trying to reach it with chrome extension which gives me the ability to send REST requests, chrome prompts me for credentials and this is the part I dont understand why? Windows auth is the one that should take my information from my windows login isnt it? It is not forms auth. Of course it happens the first time only, if you are reaching it multiple times it just returns the token, but I guess its just the session things.
I feel that I am missing something and dont have enough knowledge about it so any information would be nice.
Question:
Why windows auth is prompting for credentials when I am trying to authenticate to my WebAPI the first time? Shouldnt it handle this automatically based on my windows login information?
Thank you
Windows authentication means it will validate the username and password of the user available in the directory listing of the hosted server.
And after you enter the credentials once then the browser will manage it further.
If you close that tab and open the url in new tab then also it will not prompt again unless the browser is not closed and reopened.
It is not possible to handle windows login automatically without login prompt box.
I'm working on a website that needs to be authenticated to via windows authentication in iis. To access this website you are required to login using windows authentication on another site.
I want to pass that windows authentication to my website so they do not need to log in. is this possible? and how? Ive looked through impersonation and keroberos but they dont seem to by what I'm looking for. The site also needs to have the correct credentials because the windows user is a parameter to get sql information for each individual user.
Thanks for the reply!, after a few hours of trial and error i found that it is paritally browsers issues and partially authentication issues. In firefox and chrome the authentications persist through, but not in IE. The solution was to change the authentication to windows authentication, then change the provider to Negotiate:kerberos in the authentication Configuration in IIS.
I currently need to access an API that is set up in an staging environment on an Apache web server but the web server throws up a username/password dialog when browsing to the API url. Unfortunately I do not have access or control over the behavior of this web server.
Is it possible to programmatically send the username and password to an Apache web server?
You have ran into Basic Access Authentication. You just need to pass the username and password as part of the URL:
http://username:password#url.com/page.html
Use the following:
http://user:pass#domain.tld/path
Have you tried sending the Authorization header incorporating the base-64-encoded credentials as part of the HTTP request as described in the linked Wikipedia article?
I am working on a site where users can login to get more private information.
My client has another site else where that uses nt authentication for accessing it.
What they want to do is have a button on the site I am working on under the private area that will send them to the nt authenticated site, but not require them to log on to that site instead passing the username and password that they used to log into my site to the other site for them.
Is it possible to do this? and how would I accomplish it? Is there a better way to do this?
Here's an (untested) theory, the details of which will greatly depend on what types of authentication the Sharepoint site will accept. I'll tackle Basic, since it's the easiest.
You'll write out some JavaScript that uses XMLHttpRequest to submit a request to the Sharepoint site, and add their username and password to the request headers. Their browser will run that JavaScript, and get logged into the Sharepoint site.
Now, when they click the link, the client's browser should have the cached credentials to send to the Sharepoint site.
Possible issues:
XMLHttpRequest does not allow cross domain auth
Browser and XHR don't share auth info
Sharepoint and XHR can't agree on auth method
Another option is to proxy the connection to Sharepoint, which allows you to login server side (bypassing XHR limitations and browser security) - but requiring load on your server and possibly some URL target issues.
How will the other site validate your username and password?
Ideally your site shouldn't even be remembering the user's password to be able to pass it to another site (you store hashes of the password, not the password itself, and only use the actually password during validation).
What if your site provided a token to the user, who presents that token to the new site, which in turn asks your site to validate the token. Basically the second site is trusting you to tell them who the user is.
This all breaks down if the second site is actually using the Windows accounts for anything other than just retrieving a user name (for example permissions on the underlying file), since the user is not logged on as the actual Windows user account in this scenario.
If you need to authenticate against the second site, you may need to spawn a new thread and call the windows LogonUser API. Once you have the security token, assign it to the new thread and do your connection via that thread.
LogonUser requires enhanced privileges, and isn't Managed code, so there are some pretty severe hiccups to using it. But that's been the only work around I've been able to find to get a Forms authenticated site talking to a Windows Authenticated Service/Site.
Hope this helps.
Is this an intranet environment? If so they shouldn't have to login anyways. If sharepoint is setup using "Integrated Authentication" and the site is listed as a trusted site in IE, the browser will use there network cred for auto login. This can be setup on firefox as well.
Your users will not be able to connect to the NTLM site directly without getting an NTLM challenge. I would write what would effectively be a proxy to the NTLM site; i.e your server-side code will have credentials to connect to the NTLM site, and it passes through the requests from your users.
As you mention it's SharePoint (spit) bear in mind that SharePoint has a bunch of Web Services you could use for this (rather than doing screen-scraping).