CAS - Redirect to custom login page when credentials are wrong
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I've successfully configured a CAS SSO server and client. However, I want to change CAS' configurations to use a custom login page. I followed this tutorial to make such configuration and it works like a charm. But, the problem is that when I enter invalid credentials (wrong username or password) it tries to redirect to the CAS' default login page; however, it should redirect to the custom external login page. I would really appreciate if you help me to find out how to make CAS to redirect to a different page when wrong credentials are entered.
Basically my external login page sends the credentials to the CAS login page and the latter is submited automatically. However, when credentials are wrong, CAS redirects to the default login page and not to my external login page.