When modifying a web-authentication policy containing a client-match statement, removing the client-match statement causes the web-authentication policy to no longer be enforced. While the control plane configuration will still display as if web-authentication is required (the web-authentication login page still responds and the policies display still reflect the configuration), the actual effective policy that is pushed into the forwarding plane functions like a normal policy without web-authentication. This can cause open access to resources that are assumed to be protected by web-authentication.
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– Scott Cheney, Manager of Information Security, Sierra View Medical Center