I am attempting to connect to a web service. The certificate for this service is located on the server. I am creating the service like so:
BasicHttpBinding basicbinding = new BasicHttpBinding();
// Transport needed for HTTPS according to msft
basicbinding.Security.Mode = BasicHttpSecurityMode.Transport;
endPoint = new Client(basicbinding, new EndpointAddress(myURL);
When I try to get data from the service (endPoint.getSomeData(...) I get an exception:
Could not establish trust relationship for the SSL/TLS secure channel with authority..."
Question: Do I need to also specify:
basicbinding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Certificate;
And if so, do I need to have the cert on my end too?
Update: The server doesn't authenticate using client certificates. So I guess all I need to do is set basicbinding.Securtiy.Mode to BasicHttpSecurityMode.Transport and set basicbinding.Security.Transport.ClientCredentialType = HttpClientCredentialType.None?
Related
I'm configuring a WCF service in the intranet between a client and a server.
I've set it up for wsHttpBinding with TransportWithMessageCredentia without certificate authentication.
Am I correct that service now use ssl/tls and encrypts the messages?
Is this secure or do I need to use certificates too?
Yes, we should bind a certificate to the particular port, so as to secure the communication.
https://learn.microsoft.com/en-us/windows/win32/http/add-sslcert
If hosting the service in IIS, we are supposed to add an https binding to the site binding module.
The certificate is used to provide integrity, confidentially, and authentication while SOAP message security provides client authentication.
Therefore, please consider the below configuration.
WSHttpBinding binding = new WSHttpBinding();
binding.Security.Mode = SecurityMode.TransportWithMessageCredential;
binding.Security.Message.ClientCredentialType = MessageCredentialType.UserName;
the service base address is https style and authenticates the client with a pair of username/password.
https://learn.microsoft.com/en-us/dotnet/api/system.servicemodel.securitymode?view=netframework-4.8#System_ServiceModel_SecurityMode_TransportWithMessageCredential
Feel free to let me know if there is anything I can help with.
i want to encrypt messages in a WCF scenario where the binding is tcp.NetBinding and the security is bound on transport.
I found out, that if i dont encrypt the messages, i dont have to make client credentialhandling between client and server.
But if i want to encryt, it seems that there has to be some kind of
client-authentication (Windows credentials, Certificate ...).
The WCF server wont start with credentials are set to Null and encryption is on.
Is it possible to encrypt messages between the client and the server without authenticating the client?
Thanks a lot
Yes, the scenario is called Transport Security with an Anonymous Client:
This Windows Communication Foundation (WCF) scenario uses transport
security (HTTPS) to ensure confidentiality and integrity. The server
must be authenticated with a Secure Sockets Layer (SSL) certificate,
and the clients must trust the server's certificate. The client is not
authenticated by any mechanism and is, therefore, anonymous.
The bare bones binding is setup as follows:
var binding = new NetTcpBinding();
binding.Security.Mode = SecurityMode.Transport;
binding.Security.Transport.ClientCredentialType = TcpClientCredentialType.None;
Also in this particular scenario, the security is provided by TLS over TCP to ensure confidentiality and integrity. Again all that is required is to have the client trust the certificate provided by the server. The client is not authenticated by the server and is therefore known as an anonymous client.
I have created a self-hosted WCF RESTful service with basic http authentication that runs over https with a self-signed SSL certificate. Everything works fine. When users access the service operations via a web browser,they get a pop up asking for credentials (login/password).
Now I want to do certificate authentication instead of basic, but it does not work. The client's browser(IE/chrome/firefox) never prompts for certificate selection, I always get a HTTP 403 error and when I set a breakpoint in my custom certificate validor it never hits. So I'm definitely missing something here. I tried debugging with Fiddler and it confirms that there is no authentication header in the request.
Here is my code to host the service.
Uri baseAdress = new Uri("https://localhost:8446/");
WebServiceHost host = new WebServiceHost(typeof(RestService));
WebHttpBinding wb = new WebHttpBinding();
wb.Security.Mode = WebHttpSecurityMode.Transport;
wb.Security.Transport.ClientCredentialType = HttpClientCredentialType.Certificate;
host.AddServiceEndpoint(typeof(IRestService), wb, baseAdress);
host.Credentials.ClientCertificate.Authentication.CertificateValidationMode =
X509CertificateValidationMode.Custom;
host.Credentials.ClientCertificate.Authentication.CustomCertificateValidator =
new MyX509CertificateValidator()
host.Open();
Thanks for any tips.
I found this article which could probably help you: http://blogs.msdn.com/b/james_osbornes_blog/archive/2010/12/10/selfhosting-a-wcf-service-over-https.aspx
It talks about some kind of registering the certificate to netsh,..
Also, please make sure that your certificate issued to localhost (since domain part in url you call should ne same woth cert. Issued to).
Thanks for your input.
I found out what was wrong.
When I created the self signed certificate for the ssl port binding with the makecert tool, I added the "-eku" key which is making the certificate purpose to be for Server Authentication. I recreated another one without that option, so it could be used for all purposes.
Also I made sure that my certificate was in the personal store of the current user.
After that when a client enters the url of my service, they get a pop up asking them to select a certificate, and there is the one that I created.
For those facing the same issue, this post might be useful.
We have selfhosted WCF services running using NetTCP:Transport:WindowsClientCredentialType
// Set Binding Security.
netTcpBinding.Security.Mode = SecurityMode.Transport;
netTcpBinding.Security.Transport.ClientCredentialType = TcpClientCredentialType.Windows;
netTcpBinding.Security.Transport.ProtectionLevel = System.Net.Security.ProtectionLevel.EncryptAndSign;
We now need to expose these services to domains outside our own but want to continue selfhosting and not use IIS. Thus I am trying to switch us to a ClientCredentialType of Certificate.
// Set Binding Security.
netTcpBinding.Security.Mode = SecurityMode.Transport;
netTcpBinding.Security.Transport.ClientCredentialType = TcpClientCredentialType.Certificate;
netTcpBinding.Security.Transport.ProtectionLevel = System.Net.Security.ProtectionLevel.EncryptAndSign;
I have previously setup a development environment (long ago) where we used MakeCert to generate a "dummy" certificate for development purposes with WCF. But we have since purchased a certificate from Verisign. I am a bit fuzzy on what needs to happen now. I can see us using this certificate to validate our Services to the Client, but how do we validate our .NET client with certificate? Do we use the same certificate? Do we have to install this certificate during install of our client? Bit wrapped around the axle here and could use a could explaining if anyone can help out.
No you will not install your certificate with private key on your clients. You mustn't give your private key to anybody - once it is compromised your security has gone! The problem is that client certificate must have a private key as well but that private key must be owned only by that single client. That means another certificate per client.
How is it usually implemented? By local certificate authority issuing certificates to your clients. Your service will trust that authority and so all clients holding certificates issued by your authority. That is the only scenario to get this under control otherwise you need to find another mechanism to authenticate your clients.
I have a application where I want to connect to a server using WCF DS with username/password. In addition I want each client to also have a certificate (different for each client). How can I solve this in the most simple way? It must be simple to deploy new certificates to the client.