I'm having a .net core API and an EmailService as a connected service (WCF)
The EmailService is hosted on IIS (HTTPS); I'm trying to connect to the emailService with a Client Certificate. Everything is fine but i'm getting the
The HTTP request was forbidden with client authentication scheme 'Anonymous' error;
On the EmailService side:
The SSL Settings are on Require SSL (Require), the IIS Binding is on HTTPS
On the API side:
When i'm trying to access the emailservice by chrome browser, i'm getting a prompt for a client certificate, i'm picking the cert and everything works alright;
Any suggestions?
Thanks
I am not sure if you can call the service properly since WS-security is not supported in DotNet Core. Anyway, this error typically indicates that the client’s certificate cannot be recognized by the server-side when establishing the Https communication. Also, if your client communicates with the server over HTTP and the server requires SSL, this kind of error also occurred.
The Https secure communication between the client-side and the server-side can not be established properly. As you know, the https secure communication requires the procedure of exchanging each other’s public key of the certificate. Therefore, the server-side and the client-side should establish mutual trust. In other words, the server’s certificate must be trusted by the client and the client’s certificate must be trusted by the server. The specific operation is to install the certificate in the local Trusted Root Certification Authorities.
Please refer to the below link.
https://learn.microsoft.com/en-us/dotnet/framework/wcf/feature-details/transport-security-with-certificate-authentication
Besides, the client-side should have access to the private key of the certificate provided by the client so that the https secure communication is valid. The specific operation is to add the current user to the private key management group of the certificate.
Feel free to let me know if there is anything I can help with.
Related
WCF service installed on two servers and accessing that service through load balancer. We have domain validation certificate which is installed on load balancer. WCF client is giving error "Could not establish secure channel for ssl/tls authority" while adding service reference but SOAPUI is able to access service.
I am not sure what is causing this issue. Any help will be appreciated.
Thanks in advance.
The root cause is the account running the WCF client application failed to access the private key of the client certificate.
The reason we should establish the secure channel for SSL authority is that the communication between the server-side and the client-side works over https, therefore, these two sides should exchange the public key of the certificate. After that, the private key of the client certificate will be used to unencrypt the https message so that the https traffic would work properly. Likewise, the server account also should have access to the private key of the service certificate.
Please refer to the below steps to add the Everyone account to the management group of the private key of the client certificate so that the client account can access the private key properly.
Feel free to let me know if there is anything I can help with.
I have the following setup:
A self signed certificate for development purposes
An OWIN hosted Web API, deployed on a local Azure Service Fabric Cluster as a ASF service. The Web API uses HTTPS facilitated with the dev certificate in question.
A simple .net client application that calls the Web API. In that application the ServicePointManager.ServerCertificateValidationCallback method is set so it always returns true (since the CA is not trusted)
Both the client application and the Web API are on the same local development machine. The certificate is installed in that same machine on the "machine store"
Now I am able to make calls to the web api using Fiddler by providing the required client certificate. However when I try to do the same via .net code (be it RestSharp or WebRequest) the client certificate is not present in the RequestContext object on the server side. This result in an Unauthorized response. I do not think the problem is with the client code, the certificate is loaded correctly and assigned to the http client or request. Fiddler shows encrypted tunneling to the server. However the client certificate does not seem to be present at the server side.
I am at a complete loss regarding what am I missing that could cause this behavior. Any help will be deeply appreciated.
Install the certificate into the 'Local Machine/Trusted People'.
The server needs to already trust the certificate before it asks. The CertificateRequest message that it sends lists the acceptable CAs that can sign the client certificate. If the client certificate's signer isn't in that message, it can't send it.
How you accomplish that in your environment is left as an exercise for the reader. In general now that SSL certificates are available free there is little reason to indulge in the time costs and administrative inconveniences of self-signed certificates. IMHO there wasn't even if you were paying for a CA signature.
I had a problem when a service called another service over HTTPS and it couldn't setup a secure connection. My problem was that since the service is running as NETWORK SERVICE, it couldn't find the certificate, because it was looking in the localmachine/my certificate store.
When I was running from my web browser it was working fine because then, my browser found the certificate in the currectuser/my certificate store.
Add the certificate to the machine/my store and see if it helps.
I have a WCF service (authored in-house) using a WS-HTTP binding and transport security (SSL). We are authenticating callers with client certificates and a whitelist of acceptable certificates (certs are provided to us out-of-band). So we're using a custom validator (e.g. a class deriving from System.IdentityModel.Selectors.X509CertificateValidator) to do a database query to check the whitelist.
It works in the following case: We have a root certificate used in development, issued by the development team (using OpenSSL). This root is trusted (e.g. installed in the Trusted Third-Party CA cert store) on the server hosting our WCF service. The test client is configured to present a certificate signed by this root. This case behaves as expected.
It does not work in the following case: The client presents a self-signed certificate to the service. In this case the client receives the error message "The HTTP request was forbidden with client authentication scheme 'Anonymous'", and-- here's the odd part-- the service's certificate validator doesn't even run. We don't get any chance to give the thumbs-up. The client cert is rejected by a layer lower than our validator.
How can I use a self-signed client certificate with my service?
You can't. In WCF, WS-HTTP transport security is SSL. My error results from a failure in the SSL negotiation between the parties.
The normal case of this negotiation is as follows: The service sends the client a list of root certificates that it trusts. The client examines this list and finds a certificate that the server will find trustworthy and sends it.
In my error case, the client is examining the server's list and determining that its cert will not be trusted. At this point the client will normally attempt to negotiate down to anonymous access, which is forbidden in my case, so the negotiation fails.
WCF does not support self-signed client certificates, or certs issued by an untrusted CA, in WS-HTTP binding + transport security scenarios, even if you use custom validation mode. It does support this scenario in message security. I suspect that Net.TCP supports this scenario, but haven't tested that.
I have a client site that when a button is clicked it calls a wcf web service. The client site is http, while the url for the web service is https and requires a certificate. I have a valid signed private key certificate I am using.
Everything works fine on my localhost; however, after deploying to a windows 2003 server running iis 6, I get the below error when the web service is called:
Could not establish trust relationship for the SSL/TLS secure channel
with authority "host's url"
I added the cert to the store, using same web.config that works locally. I have validated that the web service call finds and sets the valid X509Certificate.
Not sure what I am missing, and I don't want to override the servicepiont manager to return true every time.
Any ideas or things I might looks into?
Found the problem.
The root certificate which the host of the web service uses was not trusted by my server. (not sure why it was on my local machine and not my server). I found this out by opening the host's url in a web browser from the server to view their wsdl and got the security warning.
Remedy: went to the issuer's site downloaded their root cert and added to my trusted root certifcation authorities.
Bam, it works now.
If it is a private cert it must be added to both the client and the server as no client can validate its root key.
I have two WCF Services using WsHttpBinding with transport security mutual certificate authentication that are being hosted on the same windows server. Clients that can access one WCF service should not have access to the other WCF service. I need some help on configuring the client certificates on the windows host. The client certificates are signed by trusted CAs and the intermediate and root certificate chain is already installed on the the server. It seems like the service automatically relies on chain of trust and does not require the actual client certificates installed on the server at all before letting the client access the service - this is not the behavior I want. Can someone please tell me how I should be configuring these client certificates in order explicitly allow access to one service and not the other?
Thanks.
That has nothing to do with certificates themselves. When using mutual SSL authentication certificates are used only to authenticate client and the authentication is done outside of your application (this is difference to message security where you can create custom certificate validator). Once certificate is trusted client is automatically authenticated to anything on the server using certificates for authentication.
You are looking for authorization - the step where you define what can authenticated client do with your service. You can either hardcode your authorization logic into your service by using role based security or you can implement two custom ServiceAuthorizationManagers and assign each to single service.