MacPorts from behind proxy servers & fetching the file directly

[db]

On 16 Mar 2018, at 12:31, Mojca Miklavec <mojca at macports.org> wrote:
> While discussing GSOC with Umesh, he repeated what we already
> discussed during the meeting. Students in campuses (including the one
> where he is studying and from which roughly 40 students participate in
> GSOC each year) might be behind proxies and might not even be able to
> run MacPorts due to blocked rsync.

Is there any list of ports used for installing base and **any other** port? I've had some problems behind firewalls. Checked guide and wiki to no avail.