[ftp://ftp.gnu.org](ftp://ftp.gnu.org), say it ain't so. ([diff](https://trac.torproject.org/projects/tor/wiki/org/doc/ListOfServicesBlockingTor?action=diff&version=443)) URL: https://trac.torproject.org/projects/tor/wiki/org/doc/ListOfServicesBlockingTor?version=443