SSH into private machines from anywhere using Cloudflare Tunnel

Unfortunately the cloudflared software, while the source is available on GitHub, and there are pull requests open and accepted for it, is not under an open source license, and the license it is under does not allow modifications, so any modifications (including the aformentioned pull requests) are contrary to the license and thus copyright law and thus illegal. The issue I filed about this is still waiting for action since October 2021.

https://github.com/cloudflare/cloudflared/issues/464

No, pull requests are not illegal, at least when done on Github, because by posting code on Github (that you are allowed to post) you grant Github and its users certain rights:

https://docs.github.com/en/github/site-policy/github-terms-o...

> By setting your repositories to be viewed publicly, you agree to allow others to view and "fork" your repositories (this means that others may make their own copies of Content from your repositories in repositories they control).

That license doesn't allow modifications, which is what pull requests are. The forking thing is only about making copies, not modifications.