Because of xyz reasons, we don't have Service Provider (SP) to place SAML login request. So, here my question is will it be possible to login into SAML through IDP directly? If it is possible, could you please explain steps? We are using Webservices, please remind this.
The IdP can read SAML tokens but only when they are grouped using a profile. A common profile is the browser based WBSSO. So in order to talk to the IdP you need an SP. The SP just groups the SAML tokens into a profile the IdP can understand. Most SAML profiles are browser based but have a look at the ECP profile for non browser access https://wiki.shibboleth.net/confluence/display/CONCEPT/ECP
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I am unable to find Api's on implementing SAML authentication flow for the SP Application programmatically without user's to manually enter their credentials on SAML compliant IDP( SAP IAS) login screen configured for the SP application as a starting point , I have established the trust between the the IDP and SP application ,trying to implement non interactive login from browser , is there any way to implement this approach.
According to the saml standards you can't send password via saml authn request, therefore you will not be able to authenticate from idp without redirecting to idp login using saml. But if you have control over idp you can implement a shared cookie concept to achve this requirement, but then this is no more saml compliant.
SAML was never designed for machine-to-machine authorization. The closest (IMO) that you can safely get while staying inside intended usage and specs is passing a SAML assertion wrapped in a WS-Trust STS transaction.
I would suggest you look into either WS-Trust or OAuth. Either of these are built for machine-to-machine transactions.
We have been assigned a task, where we should integrate data from client's Active Directory on weekly basis. Currently we have working Single Sign On implemented with SAML with them. What would be the best approach to handle this situation? I'm still fairly new with SAML, so is it possible to access client's AD with SAML or should it be done with e.g LDAP instead?
All answers are much appreciated
- Andy
SAML is just an XML vocabulary. It has no functionality such as being able to connect to AD and search for users. That's what the Identity Provider (IdP) does. The IdP connects to AD, usually via LDAP, queries the attributes for a user and converts them to SAML format. It then sends the SAML, containing the attributes to the Service Provider (SP).
The point of SAML is the SP doesn't need integration, it just accepts SAML using SSO. So when a user logs in to the SP, the SP redirects them to the IdP, which authenticates them and redirects them back to the SP with their SAML attrobutes.
If you need to export all users from AD on a weekly basis you can just use LDAP and you don't need SSO.
Sorry I am still very confused, read everywhere telling me oath is a authorisation protocol but it appears using the azure ad oauth code grant, it does promote a login screen to authenticate against the directory, so is it not an authentication process? what is the relationship between the open id connect? thanks!!
the OAuth2.0 protocol has several flows that an identity provider (in your case Azure AD) may implement to support auth.
The Auth Code flow is in fact one of these used by apps to get access tokens for some api. The flow is quite simple, an app redirects the user to the identity providers /authorize endpoint. At this point the user enters their credentials, and the site redirects back to your application with an authorization code and can also issue an ID Token that represents a user (This is the OpenID Connect part). The app takes this code, and POSTs it to the /token endpoint and will be issued an access token and refresh token. With the access token, your app can access whatever api you've requested access for.
For Azure AD specifically, Microsoft has built libraries that handle all these flows and token caching so most of the complexity is abstracted away. There's some simple code samples that you can checkout that you may find helpful. The authentication protocols and scenarios doc for Azure AD may also be really helpful for conceptual information.
i need to integrate with SAP, they send the following URL with username and password authentication.
when i access this url i redirected to
https://sts.xxxx/adfs/ls/?SAMLRequest=fVFbS8MwFP4rJe9t07oLDWuhrCgFlWFFwRfJmlMXSJOak8757007lPmgcB4OH%2Be7JRvkvRpYObqDfoD3EdAFdZWThtIlXa4yCGm23ocJiGW4hzYL04WgHazTlIqEBE9gURqdkzSiJKgRR6g1Oq6dh2iyCunCzyPN2FXGFvSFBJV3kJq7mXVwbkAWx%2Bgw8kF49GaOfom56DBWGJPg2tgW5nQ56bhCmFx2HFEe4QcpEcFOilujcezBNmCPsvVRBJxy4pOdeqWRzV1zMlrNDEeJTPMekLmWNeXdLfMd2GCNM61RpNhM12yuZC%2F4%2F9P5dxJSNOXu9ea52sQXOmfRgd17Yl3tjJLt51Sx5%2B5v3SRKZkSKsJtP2ahxgFZ2EoQvr5T52Frgzj%2BIsyOQuDib%2Fv7W4gs%3D&RelayState=oucqqvqvwzeoqzxboredvobeczosudqfexssqdr&SigAlg=http%3A%2F%2Fwww.w3.org%2F
which requires login authentication as attached 1,,
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Questions: How can i access this service in .NET Programming?
The ADFS security token service (STS) can be access pro grammatically. Here is an example that uses powershell https://blogs.msdn.microsoft.com/besidethepoint/2012/10/17/request-adfs-security-token-with-powershell/
You will need to follow SAML2 protocol with SAMLRequest and SAMLResponse tokens.
Here is the nice explanation:
SAML (or more specifically, SAML version 2.0) is what brings
Single-Signon to SURFconext – being able to authenticate only once to
your home university (or Identity Provider in SAML parlance) and
subsequently login to many applications (or Service Providers) without
having to type in a password again.
let’s take a look at what happens when someone wants to log in at a Service Provider (SP) that uses federated authentication for one of its customers (the IDP). For the sake of example, let’s say the SP is Google Apps and the IDP is an organisation called My University, where Alice is a student. The flow of SAML protocol messages can be illustrated in a diagram as follows:
Scenario:
Browser(User) requests resource from Service Provider (SP).
SP Redirects (with SAML Request) to Identity Provider (IdP).
Since it is first login, User gives the (IdP) his/her valid credentials.
IdP then redirects Browser (with SAML Response which includes SAML token) to the SP page.
Application has a link to different application. The Second application needs to validate the user credentials with the same IdP.
User clicks on that link and browser opens the second application. Browser contains the same SAML response from SP.
In Step 5 how can I authenticate the user with SAML response and allow the user to be logged in automatically.
Do I need another SP?
I will not be able to use the SP from step 1 as it is external application.
Appreciate your help
If the second application is in a different administrative domain, it should be done through its own SAML SP starting another SAML request/response exchange with the IDP. If it is in the same domain you may be able to pass an intra-domain credential such as a cookie between the first application and the second (or rely on full SAML as well). You would never reuse the same SAML response because that is meant to be one-time use only.