Hello Mr. Maff,
VPL uses cURL to connect to the execution (jail) server. VPL will use other
port than 80 only if you use "https" or set explicitly a port in the
URL to your jail server.
I assume you are not using a transparent proxy then, to manage proxy
connections, you must use the OS environment vars: http_proxy and https_proxy.
Example:
export http_proxy=http://username:password@proxyserver.com:port/ export https_proxy=$http_proxy
Best regards.
P.D.: A detailed report may
include:
versions of Moodle, VPL plugin, jail server, browser, OSs used, screenshots and
how to replicate the error.