[Techtalk] Firewall blocks download -- why?

Laurel Fan laurel at sdf.lonestar.org
Sat Mar 29 11:21:27 EST 2003


On Sat, Mar 29, 2003 at 01:03:42PM -0500, Brenda Bell wrote:
> I'm using wget to download a file.  The URL is
> ftp://download2.eclipse.org/R-2.1-200303272130/eclipse-SDK-2.1-win32.zip. 
> wget connects to 204.138.98.19 port 21 OK, but then I get a message that says:
> 
> 204.138.98.19:37146: No route to host

I get the same message, and I do not have a firewall.  Here is the
complete output I get from wget:

--10:07:16--  ftp://download2.eclipse.org/R-2.1-200303272130/eclipse-SDK-2.1-win32.zip
           => `eclipse-SDK-2.1-win32.zip'
Resolving download2.eclipse.org... done.
Connecting to download2.eclipse.org[204.138.98.19]:21... connected.
Logging in as anonymous ... Logged in!
==> SYST ... done.    ==> PWD ... done.
==> TYPE I ... done.  ==> CWD /R-2.1-200303272130 ... done.
==> PASV ... couldn't connect to 204.138.98.19:39688: No route to host

What wget is doing is using passive (PASV) mode for the file transfer,
which means the client (my computer) initiates the data connection to
the server (download2.eclipse.org).  However, it is unable to make the
data connection (to port 39688).  My guess is that the problem is on
the server side, possibly a firewall.

FWIW, when I use active mode (where the server initiates the data
connection to the client), by using the ftp command (I couldn't tell
how to make wget use active mode), it works (but slowly). 

If you know how to contact the administrators of the server, I would
recommend sending them your wget output, to see if this is something
they can fix.

-- 
laurel at sdf.lonestar.org
http://dreadnought.gorgorg.org


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