We are developing ASP.NET application and we need to use Client Certificate Authentication on IIS 8.
I followed guides to setup SSL and Client Certification authentication.
https://blogs.msdn.microsoft.com/asiatech/2014/02/12/how-to-configure-iis-client-certificate-mapping-authentication-for-iis7/
and
https://blogs.iis.net/rlucero/iis-7-walkthrough-one-to-one-client-certificate-mapping-configuration
I've setup client certificate and added one-to-one mapping to map it to local administator account (once it works, i will change it to more resticted user).
I validated that both server and client certificate are valid and trusted on server and on clinet. So there is no problem with certification authority.
When i try to acces the web page i am promted to choose client certificate. When i confirm selected certificate i allways get 401.1 result: Unauthorized.
I think that it can be related with that in IIS Authentication settings i disabled all authentication types. When i enable Windows Authentication, it seems to work - I am prompted to select certificate and when i confirm selected certificate, i am prompted for username and password and then page is displayed correctly. Of course i do not want user to enter windows user name and password.
PS: Error log file from IIS is here https://www.dropbox.com/s/pe8qwxpgilr347l/fr000156.xml?dl=0
Thank you for any tips.
In my case, i needed to install and activate "client certificate mapping authentication" in Windows Server Manager "Roles and Features" and the IIS configuration editor here: system.webServer/security/authentication/clientCertificateMappingAuthentication
Related
In one of my applications, I enabled the configuration on IIS to accept the client certificate, by enabling like the below picture. The same configuration I did on the local IIS server and it works.
but it's not working. Any configuration that I am missing..?? At least it should prompt for the Certificate.
It will prompt the client to provide a certificate only when accessing https:
You need to check whether to access the service via https.
I think you need to install the cert in cert store in current user for the browser to show up the dialog box with list of certificates
I'm running a Windows 2012 R2 environment that hosts a website in IIS. The website currently requires a client certificate (which is validated) to access the website.
The client certificate is checked to ensure that it is valid and has not been revoked, not for identification by the operating system. If the user presents a valid certificate, the information on the certificate is used to authenticate and identify the user in the application code (the actual authentication is Forms Authentication). There is no mapping of the client certificate to an individual user (e.g. the client certificates does not map to an active directory account).
The site currently utilizes an additional piece of software to pass the client certificate to an external OCSP to verify the certificate status.
My goal is to remove that additional piece of software and be left with an IIS only (or Windows Server only) solution, but the documentation has me confused. I'm not sure if I need to install the OCSP role on the IIS server or our AD server, or if there is a way in IIS to configure a URL to check the certificate.
If the client certificate is pointing to an OCSP server in its extension, IIS will automatically validate it. You might check the CAPI2\Operational event log to see what happens during the validation.
We have an application deployed to IIS and every time we connect to it, we get the following browser prompt:
Select a certificate to authenticate yourself to sitename
We do not have a reason to challenge for a client certificate and seems like this setting was introduced by mistake
How can we remove it?
Research:
This question on How can I prevent browsers from prompting Users for a Client Certificate? looks similar, but doesn't have an answer yet, and also is about setting this up on kestrel-http-server
This question on Browser is not prompting for a client certificate is for how to make sure there is a prompt, and didn't provide enough hints as to how to prevent one
Open IIS and navigate to your web site or application and go to the SSL settings
Set the Client Certificate setting to "Ignore"
Both 'Accept' and 'Require' will both challenge for a client side cert
Recycle your app pool and re-launch your browser to test
Note: SSL settings are inherited from your Site > Application, so you may need to apply these SSL Settings at multiple levels
Further Reading:
Why does google chrome prompts to "select a certificate to authenticate yourself"
How to prevent browser from prompting for a client certificate and allow the IIS to accept it (not require it)?
I want to use Thinktecture IdentityServer 3 to provide STS to ASP.NET site but I don't know how to setup the certificates.
How do I use SelfHost (InMem with WS-Fed) Thinktecture Identity Server 3 as STS for a local IIS site?
The problem I have is as follows:
I've used this client in VS Development Server:
https://github.com/IdentityServer/IdentityServer3.Samples/tree/master/source/Clients/MvcOwinWsFederation
with the SelfHost (InMem with WS-Fed):
IdentityServer3.Samples/tree/master/source/SelfHost%20(InMem%20with%20WS-Fed)
It all works, connects, authenticates and displays claims.
But when I publish the client to local IIS site called WSFedClient and that tries to authenticate against the same self-host STS,
but I get this error:
"The remote certificate is invalid according to the validation
procedure."
I've followed this:
https://github.com/IdentityServer/IdentityServer3/issues/553
...but I'm still confused about what it is I need to do.
Try installing your cert into the "Trusted Root Certificate Authorities" store.
1) Launch the mmc. At the start menu, enter MMC.exe and hit enter.
2) Press control-M to add a module. Select Certificates, and click Add.
3) Select Computer account, then Next, select Local Computer, and hit Finish. Then hit OK.
4) Expand Certificates. Right-click on "Trusted Root Certificate Authorities", and select "All tasks", then "Import..."
5) Browse out to the cert and select it. You probably will need to check the box to allow it to be exported, which means you'll probably have to enter the password, which you should know, if you created it.
Check following things regarding your certificate. Most probably point # 2 below causing this error.
Check if CA's root certificate exists in Trusted Root Certification Authorities store.
Check "Issued To" field of certificate matches with host name of identity server's endpoint url.
Check expiry date of certificate.
Check if certificate is not revoked by CA.
It looks like you must configure SSL endpoint for callback URI as well. That is WSFedClient in your sample.
In the Server
I have configured a intermediate certificate .pfx file in the IIS and created a https (443) port using binding option. I use certificate for Authorisation also I am expecting a client certificate from the client , I enabled the Require SSL and clien certificate required option in the IIS.
I checked the Intermediate certificate authorities for the root certificate and they also presents, checked the .pfx file installed in the certificate store (Local Machine) also presents.
I created .cer file from the above .pfx file with include private key option and shared the .cer file with my client and he has to attach the .cer file for authorisation .
Above is the REST wcf service with POST.
In the Client Side
I tested this application after getting the .cer file, attach that to my request in my client.exe and calling the service - it returns .403 fobidden error.
In the IIS log it is logged as 403.16 , sc-win32-status code = 2148204816 error
Please help me my above approach is correct and how to avoid this error.
Is configuring CTL is the option , or I need to get a separate client certificate for use from my client side.
You need to make small steps to debug this.
First import SSL server certificate to LocalMachine\My store. Verify
that certificate is trusted (by double-clicking it and verifying
chain).
Setup SSL binding in IIS. Verify that you can access the https site (even WCF service gives some documentation page on http/s).
Import client certificate in client CurrentUser\My store. Verify that certificate is trusted (by double-clicking it and verifying
chain).
Set SSL require mode on your WCF service on IIS. Verify that when you access https site of the WCF service a certificate is prompted and no trust error is returned (again, the documentation page should be displayed)
Server certificate must have Server Authentication extension. Client certificate must have Client Authentication extension in it. Client has to trust server certificate. Server has to trust Client certificate. This means that CRLs from both chains must be reachable.