I have this install from this guide https://www.linode.com/docs/websites/varnish/use-varnish-and-nginx-to-serve-wordpress-over-ssl-and-http-on-debian-8
is there any advantage for using proxoy protocol? from https://info.varnish-software.com/blog/five-steps-to-secure-varnish-with-hitch-and-lets-encrypt
to this setup (I have varnish 5)
if so, what is the modification needed for the setup in the linode link above?
best.