Delphi installation fails through ClearOS

I've been trying to install Delphi's Community Edition for the last several days. The basic program installs, however, when trying to use their GetIt repository installer, the install kept failing, indicating a corrupted download. Embarcadero doesn't support any help for that edition, and posts in a public forum produced no workable solutions. I finally decided, as I had gotten a proxy server notification from ClearOS when trying to get something to work, that I would use a hot spot and bypass ClearOS. Magically, everything began to work, and all the packages installed.

So it appears that something is blocking the downloads. I have no information on a particular port that may be blocked, but I suspect that may be the case. Is there a way or a report that would indicate a block of incoming data?

Thanks,

Geep