Looking for logging into the Authentication site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Authentication site. After that you can login as usual with your login credentials.
https://docs.oracle.com/cd/E17802_01/j2ee/j2ee/1.4/docs/tutorial-update2/doc/Security5.html
https://developers.onelogin.com/quickstart/authentication
https://laravel.com/docs/5.7/authentication
https://swoopnow.com/user-authentication/
https://pythonspot.com/login-authentication-with-flask/
https://docs.servicenow.com/bundle/london-platform-administration/page/administer/security/concept/c_LoginSecurity.html
https://www.cisco.com/c/en/us/td/docs/optical/cpt/r9_3/configuration/guide/cpt93_configuration/cpt93_configuration_chapter_010000.pdf
https://auth0.com/universal-login
https://help.salesforce.com/apex/HTViewHelpDoc%3Fid%3Dsecurity_overview_user.htm
https://symfony.com/doc/current/security/form_login_setup
https://help.twitter.com/en/managing-your-account/two-factor-authentication
https://www.youtube.com/watch%3Fv%3De8BlURn6SFk
https://www.youtube.com/watch%3Fv%3DWiD3V_gmzA8