Varnish is configured with a relatively small, 64MB, memory-mapped file storage for testing purposes so that at least you can test traffic going through Varnish, stripping cookies etc.

Varnish is configured to talk to the Apache 2 server set up by Parrot.

The Varnish admin console is listening on port 6082 as is the default, and is using a secret with the following value:

varnish-secret

If you want to use a custom VCL, then you can do so by simply editing the file in:

parrot-config/varnish/default.vcl

and then running vagrant provision to refresh the file and restart Varnish.