Looking for logging into the Varnsih Esi Include 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 Varnsih Esi Include site. After that you can login as usual with your login credentials.
https://varnish-cache.org/docs/3.0/tutorial/esi.html
https://varnish-cache.org/docs/5.2/users-guide/esi.html
https://stackoverflow.com/questions/50314414/how-to-include-content-from-other-side-with-esi-in-varnish
https://www.smashingmagazine.com/2015/02/using-edge-side-includes-in-varnish/
https://www.fastly.com/blog/using-esi-part-1-simple-edge-side-include
https://de.wikipedia.org/wiki/Edge_Side_Includes
https://serverfault.com/questions/624068/varnish-cache-rewrite-esi-include-url-if-session-is-active
https://serverfault.com/questions/535436/varnish-esi-not-working