How to configure a client certificate in IIS Server for any outgoing calls that originates FROM a site TO a https application

Question

We have deployed a site in IIS server which connects to an external application which expects a client certificate (Client/Server Authentication)

Unfortunately since we don't have control to the source code of the site, we are unable to configure a client certificate to all outgoing calls to the specific application, as part of site's source code

So we are looking for an option to configure a client certificate in IIS server for all calls that originates FROM an iis site TO an external application

Answer 1

In fact, it cannot be configured in IIS. IIS can only configure the certificate of the inbound request, and verify the certificate with the requesting client.

As far as I know, there are two ways to give a station request to add a certificate. One is to add a custom module in IIS, which intercepts outbound requests and adds a client certificate so that the request can communicate with external sites.

Another method is to configure the certificate through code within the application. You need to add a reference to the certificate and set the request.