Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

SOULUTION: Net::FTP via CGI mystery

by George_Sherston (Vicar)
on Jul 13, 2002 at 14:46 UTC ( [id://181485]=note: print w/replies, xml ) Need Help??


in reply to Net::FTP via CGI mystery

Molto thanks to tjh in the CB for the solution to this problem (and shame on me for not reading the manual finely enough) - the answer is to create the new ftp object with Passive mode turned on, 
my $ftp = Net::FTP->new("ftp.xxxxxxxxxx.xxx", Passive => 1, Debug => 1
+);

[download]
So that's fixed. Although I'm still puzzled why one needs to do something different in order to call the script in a different way...

§ George Sherston

Replies are listed 'Best First'.
Re: SOULUTION: Net::FTP via CGI mystery
by tjh (Curate) on Jul 13, 2002 at 14:55 UTC
    No prob. I believe FTP clients open 2 ports, 1 out and 1 in (control and data, IIRC).

    Your shell login is likely running on a box that will allow the return port to be opened. The web server box (the one running your script), is likely behind a firewall that won't allow the return (data) port to open. You however are succeeding in logging in via the already open control port.

    If I missed badly others should correct me :), but it sounds good eh?

    Update: Beatnik followed up by pointing out to me more specifically that port (20), the traditional active FTP data port on the ftp server, may be blocked, while port (21), the traditional ftp control channel, may not be.

[reply]

In Section Seekers of Perl Wisdom

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?

www.com | www.net | www.org
Node Status?
node history
Node Type: note [id://181485]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? • Last hour • Other CB clients
Other Users?
Others meditating upon the Monastery: (7)
As of 2024-04-23 11:01 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found