Is this something that's viable on an ISPConfig3 setup? The instructions mention to change the port for each vhost. Is that something that would have to be done manually after each new vhost is created once varnish is installed?
I don't really know ISPconfig but I assume there is some kind of vhost template you can edit? I can really recommend using this on your hosting server as well, we're doing this as well. And we're also running it on a high-traffic website which performs a lot better since
