Avoid hotlinking with Varnish

There’s a quite a few articles on how to configure Apache to avoid hotlinking, so that material on your web server isn’t used on remote sites (at least not without your knowing).

This is how to do the same with Varnish. The example suggests that you forbid hotlinking to anything under http://www.example.com/fun/. The code will of course need to be added to whatever else exists in vcl_recv.

sub vcl_recv {
  if (req.http.host == "www.example.com" &&
  req.url ~ "^/fun/" &&
  (req.http.referer && req.http.referer !~ "^http://www.example.com/")) {
    error 403 "No hotlinking please";