@Override
    public void start() {
        super.start();

        if (isEnabled()) {
            startProxy();
        }
        else {
            XMPPServer.getInstance().getIQDiscoItemsHandler().removeServerItemsProvider(this);
        }
    }
Returns the IP address(es) that the proxy connection manager is servicing.
xmppserver/src/main/java/org/jivesoftware/openfire/filetransfer/proxy/FileTransferProxy.java