[TriLUG] Road Runner blocking ports?

[Mark Freeze]

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/
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