Use the Configure > SSL > Client Certificates > General tab in the Content Gateway manager to configure how Content Gateway responds when the server requests a client certificate:
Steps
Under Action When Client Certificate Is Created:
Select Tunnel to always permit the request and provide the client certificate to the server.
Select Create incident to specify how Content Gateway should handle that certificate and site. This is the only way to specify a disposition other
than tunnel. See The incident report for a list of possible dispositions.