Remote logging over encrypted channel

Hello, 
One of our clients wants to have the logs from Isilon (audit logs and others as well) to be visible in Grafana using promtail and Loki. This should be possible but one of the requirements is that the connection should be done over encrypted channel. As I can see Isilon is using "obsolete" syslogd where encrypted connection is not an option. Is there any way how to do this ?