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HTTP Route Assertion fails with Windows Integrated Authentication

Question asked by mrutherford on Jan 19, 2018
Latest reply on Dec 21, 2018 by Stephen_Hughes



Using CA API Gateway Version 9.2 CR7, I'm unable to use the HTTP(S) Route Assertion with Windows Integrated Authentication. I was wondering if anyone else ran into similar problems.


I currently am trying to publish a Web API that contains the following Policy Assertions. :

  1. Require Windows Integrated Authentication Credentials
  2. Route via HTTP(S) with the following Authentication selections.
    1. Use Windows Integrated
    2. Use Delegated Credentials

The URL that I'm performing the HTTP GET to in the Route Assertion is configured to use Windows Integrated Authentication as it is a ASP.NET Application hosted in IIS 8. 


This is where I'm running into issues. The HTTP(S) Route Assertion is failing when I make these selections. Looking in the logs I'm seeing the following:

2018-01-19T09:10:14.737-0500 INFO    10121 com.l7tech.server.message: Processing request for service: AuthWSTest [/authws]

2018-01-19T09:10:14.738-0500 WARNING 10121 com.l7tech.server.policy.assertion.ServerHttpRoutingAssertion: 4043: Routing with Kerberos ticket failed with: Credentials for delegation not found

2018-01-19T09:10:14.738-0500 WARNING 10121 com.l7tech.server.MessageProcessor: 3016: Request routing failed with status 601 (Error in Assertion Processing)


Using the Service Debugger, I've verified that the and kerberos.realm context variables are being populated as seen here:


When making the call via Fiddler I can see API Gateway return the initial 401 Status code with the Authorization: Negotiate header in the Response Headers. Additionally, I can see the client including the Authorization: Negotiate header in the Request after it receives the challenge from the API Gateway. This seems to indicate that Windows Integrated Authentication is working: