[TriLUG] Road Runner blocking ports?

[William Sutton]

Well, FWIW, I don't open port 20 on my Linksys and ftp works fine (Comcast 
though (yes, I know, it stinks...I don't have a choice)).

Do you have your ftp server configured to allow anonymous access?  to 
allow certain users?  If the former, TWC might have blocked you as an open 
anonymous ftp server.  If not, might check the latter...could be the ftp 
server is all dressed up and nobody to go with it...

-- 
William Sutton


On Tue, 21 Feb 2006, Mark Freeze wrote:

> Whe I got home yesterday I turned on the 'Allow Passive Transfers' option in
> the config file, but, I'm still having the same problem.  I am not using a
> 'client' program to connect. Im just going to a command prompt on my $M box
> and doing ftp from the command line.
> 
> This may be a problem with my d-link firewall-router.  When I enabled the
> virtual server ftp option on the d-link, it only opened port 21.  In fact,
> it showed 'Private Port 21 - Public Port 21'.   I another rule for 20 but no
> luck.
> 
> I looked at the d-link help for their virtual server feature but it kept
> referring me to works by the noted Spanish author 'Manual'.  I may have to
> check out his stuff this evening.
> 
> Thanks,
> Mark.
> 
> 
> 
> 
> > I believe the "passive switch" that was referred to was in the ftp client
> > itself.  Basically, the way a "normal FTP connection" works is like this:
> >
> > client        -->ftp -->       server
> >            <-- ftp-data --
> >
> > The client opens connections on port 20 and the server opens them back
> > to the client on port 21.  Passive mode turns around that second
> > connection
> > so that the client makes both of them like this:
> >
> > client        -->ftp -->       server
> >             -- ftp-data -->
> >
> > This works better when the _client_ is behind a firewall and the
> > server can't open a connection back to it.
> >
> > Cheers,
> > Tanner
> >
> >
> > --
> > Tanner Lovelace
> > clubjuggler at gmail dot com
> > http://wtl.wayfarer.org/
> > (fieldless) In fess two roundels in pale, a billet fesswise and an
> > increscent, all sable.
> > --
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