I can't download anything using port install

[amine_ipt@…]

amines-mac-pro:~ Amine$ sudo port -v selfupdate
--->  Updating MacPorts base sources using rsync
rsync: failed to connect to rsync.macports.org: Connection refused (61)
rsync error: error in socket IO (code 10) at /SourceCache/rsync/rsync-42/rsync/clientserver.c(105) [receiver=2.6.9]
Command failed: /usr/bin/rsync -rtzv --delete-after rsync://rsync.macports.org/release/tarballs/base.tar /opt/local/var/macports/sources/rsync.macports.org/release/tarballs
Exit code: 10
Error: Error synchronizing MacPorts sources: command execution failed
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: /opt/local/bin/port: port selfupdate failed: Error synchronizing MacPorts sources: command execution failed
amines-mac-pro:~ Amine$ sudo port clean
Can't map the URL 'file://.' to a port description file ("Could not find Portfile in /Users/Amine").
Please verify that the directory and portfile syntax are correct.
To use the current port, you must be in a port's directory.
amines-mac-pro:~ Amine$ 

[neverpanic (Clemens Lang)]

rsync: failed to connect to rsync.macports.org: Connection refused (61)

tells us there is a firewall between your location and our main mirror that refuses rsync connections. You need to talk to your network administrator or read wiki:FAQ#selfupdatefails. There's nothing we can do.

If you need further assistance, please mail to the macports-users mailing list.