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Setting up FTP clients for FTP
The standard FTP programs running on Unix machines are
not able to access the IAAT anonymous FTP account. They also can not be used to access outside FTP servers. Currently
the following FTP clients are known to work with passive mode FTP. If you
use or know of other clients, please let me know.
ncftp is a semi-graphical FTP
browser installed on all Unix machines at IAAT.
In order to switch
passive mode on in ncftp, type
and then change the Default FTP mode to Passive FTP Only (PASV).
Caveat: ncftp has one stupid feature, though, in that it remembers
whether a host can do passive mode or not. If you tried to FTP to
astro.uni-tuebingen.de or somewhere else before switching
to PASV mode, ncftp will think that these machines only
understand the PORT mode. You'll therefore have to manually switch the
portmode off for these machines. For that, type
move the cursor,e.g., onto the astro.uni-tuebingen.de entry, and
Now change the entry can use passive FTP to YES, leave
the entry for astro with X, leave the bookmarks editor with
x, and leave ncftp.
The next time you should be able to log onto astro.uni-tuebingen.de and
Mirror is a
package written in Perl that uses the ftp protocol to duplicate a directory
hierarchy between the machine it is run on and a remote host. It avoids
copying files unnecessarily by comparing the file timestamps and sizes
before transfering. Amongst other things can optionally compress, gzip,
and split files (from the mirror README). It was written for use by
archive maintainers but can be used by anyone wanting to transfer a lot of
files over ftp. At IAAT we use it for mirroring RXTE data, use for
general purposes is not advised, please use wget instead.
To turn on passive mode for mirror, set passive_ftp=1 in the
defaults package in the file mirror.defaults.