Setting up a Moodle hub
A Moodle or MNet hub is similar to a peer-to-peer network, with the only difference being that it accepts connections from multiple Moodle (and Mahara) servers. While this could be set up manually using several peer-to-peer connections, hub mode automatically accepts any hosts that try to connect to it. Potentially, this is a big time and maintenance saver, but at the cost of opening up your site to other Moodle instances.
A public learning portal with resources to be shared across many sites is typically implemented using hub mode. Each Moodle instance that wishes to access the portal must be configured to connect to the hub.
Once networking has been turned on, choose the Moodle site that will act as a hub and go to Site administration | Networking | Manage peers to turn on Register all hosts (promiscuous mode). Effectively, a hub is a regular Moodle site that operates in a special mode.
All hosts are treated like peer-to-peer sites, except the Review...