SSH into private machines from anywhere using Cloudflare Tunnel

I'm under the impression that this is against CloudFlare's ToS, otherwise I'd probably be doing it myself.

See section 2.8 "Limitation on Serving Non-HTML Content." of their subscriber agreement:

use of the Services for serving video or a disproportionate percentage of pictures, audio files, or other non-HTML content is prohibited, unless purchased separately as part of a Paid Service or expressly allowed under our Supplemental Terms for a specific Service.

Last I checked, SSH is non-html content. I even opened a support ticket with their support, specifically asking about SSH and other traffic and this is what I received: So if no matter what service you use, Once you breach this rule it will be applied.

EDIT: Looks like the CloudFlare CTO has clarified things below that this usage does not in fact violate the ToS.