Due to an infrastructure limitation, one of the proposed solutions for serving an HTTP service to the world is to offer it over ports 8080 and 8443.

My concern is that some users may not be able to access these services because they are not running on standard ports, and the content might be filtered by (for instance) as part of the corporate network policy.

So... how likely is it that a user from the internet at large might not be able to access these services?