Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Actually my intuition already was that Net::FTPServer isn't the problem...

A look into the code of Net::FTPServer revealed that the error is raised by
if (!$self->{_test_mode} && $hostaddrstring ne $self->{peeraddrstr +ing}) { # See RFC 2577 section 3. $self->reply (504, "Proxy FTP is not allowed on this server.") +; return; }
so $self->{peeraddrstring} is compared with $hostaddrstring.

Data::Dumper shows me that $self->{peeraddrstring} correctly holds the IP of my client machine. And $hostaddrstring is constructed from the address my client sends to the ftp-server via the PORT command.

Here lies the error. As I could see in my gFTP log, gFTP sends: PORT "192,168,xxx,xxx,xxx,xxx"
And this finally ends up in the $hostaddrstring. But as you can see from the address, this is the local-network-address of my workstation on our LAN here and not my actual public IP. That's why the test in Net::FTPServer fails.

My FTP client does this all the time and I don't know why other FTP servers never complained. Net::FTPServer seems to be stricter here.

Anyway, now that we know Net::FTPServer isn't the actual problem. Does anyone know where in my client/workstation/linux-machine setup the flaw is? (as a reminder: if the test would pass, for example by enabling proxy ftp, my ftp-client goes into infinite wait with "150 Opening data connection for file listing.")

In reply to Re^2: Net::FTPServer problem with active/passive connections by isync
in thread Net::FTPServer problem with active/passive connections by isync

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others lurking in the Monastery: (13)
    As of 2015-07-02 11:02 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (34 votes), past polls