Anonymous FTP Access
FTP Access to Online Volumes
FTP access to any
Geosciences Node data set can be achieved by
substituting "FTP:" for "HTTP:" in the data
For example, from the
LCROSS web page, clicking the link to
CLIO Calibrated Data gets you to this
To use an FTP client rather than your web
browser to view and download these files,
use this URL:
Some browsers hide the "http://" at the
beginning of the URL. You can still insert
"ftp://" as in the above example.
You may verify that the files you have
downloaded are intact by comparing their
checksums with the checksums of the files on
the server. You'll find a checksum file in
the root directory of each archive.
Read more about
Our FTP servers use port 21,
which is the default port used by most FTP
Use FTP Instead of Web Browser to Download Binary Files
Our experience has been that it's better to use a dedicated FTP
client rather than a Web browser to download binary data files. Web browsers use a combination of methods to
determine whether a file to be downloaded is text or binary.
Sometimes a browser will guess wrong, especially in the case of binary data files
with attached PDS labels, such as MGS MOLA and TES data products. To ensure that the data files you download are not
corrupted during the transfer, use FTP and specify binary mode. On the other hand, if you
just want to read the documentation or other text files, then a Web browser will work
Another advantage of using FTP is that you can transfer multiple
files at once, if you are using an FTP program that allows this. There are
several FTP clients available for free that do this.
FileZilla are two such
programs that we have used with success.
use SmartFTP, you will need to change a few settings so that it will work
properly with our FTP server. On the menu bar, go to Tools->Settings, then
click on the Advanced tab and uncheck the boxes for Show Hidden Files, Force
Long Format, and Resolve Links. This prevents SmartFTP from sending
unnecessary messages that our server cannot understand. If you are behind
a firewall, you may also need to go into the Settings window, click on the
Connection tab and ensure that the "Use Passive Mode" box is checked.
We have noticed that SmartFTP is not able to resume interrupted downloads when
used with certain Internet Service Providers such as Earthlink.
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