Moodle networking (MNet)

Hi,

Does anyone know how o where to make calls to the XML-RPC layer without using either encryption or signature envelopes?

According to https://docs.moodle.org/24/en/MNet it's possible a special mode for making this, but, how?

I need to connect several moodle instances inside the same internal network that they are after a firewall.

References:

• XML Digital Signatures
• XML Encryption

A special mode can be enabled which would allow a machine with a specified IP address to make calls to the XML-RPC layer without using either encryption or signature envelopes. This mode is provided to enable Moodle to communicate with other software systems in which the integration of signatures and encryption might be prohibitively difficult. It is not envisioned that unencrypted inter-Moodle networking will ever be enabled

I'm using Moodle 2.7.

Thanks.