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Top Forums UNIX for Dummies Questions & Answers Question regarding strange FTP behaviour Post 302456609 by methyl on Friday 24th of September 2010 05:18:55 PM
Old 09-24-2010
Yeah. Check that both port 20 and port 21 are open on the firewall.


If it is not a firewall issue there are a huge list of possible causes. Some are:
1) Second computer in this FTP relay chain is hung.
2) Transient network break
3) Cisco routers with "jumbo packets" enabled.
4) Incorrect network speed/duplex settings. Expecially any "autonegotiate".
5) Duplicate IP address.


If is is not a firewall setting try a small block size e.g. "ftp -B 1". This will tell tell you wheter a router has erroneously negotiated "jumbo packets" which are known to hang FTP.
 

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Authen::Simple::FTP(3pm)				User Contributed Perl Documentation				  Authen::Simple::FTP(3pm)

NAME
Authen::Simple::FTP - Simple FTP authentication SYNOPSIS
use Authen::Simple::FTP; my $ftp = Authen::Simple::FTP->new( host => 'ftp.company.com' ); if ( $ftp->authenticate( $username, $password ) ) { # successfull authentication } # or as a mod_perl Authen handler PerlModule Authen::Simple::Apache PerlModule Authen::Simple::FTP PerlSetVar AuthenSimpleFTP_host "ftp.company.com" <Location /protected> PerlAuthenHandler Authen::Simple::FTP AuthType Basic AuthName "Protected Area" Require valid-user </Location> DESCRIPTION
Authenticate against a FTP service. METHODS
* new This method takes a hash of parameters. The following options are valid: * host Connection host, can be a hostname or IP number. Defaults to "localhost". host => 'ftp.company.com' host => '10.0.0.1' * port Connection port, default to 21. port => 21 * timeout Connection timeout, defaults to 60. timeout => 60 * log Any object that supports "debug", "info", "error" and "warn". log => Log::Log4perl->get_logger('Authen::Simple::FTP') * authenticate( $username, $password ) Returns true on success and false on failure. SEE ALSO
Authen::Simple. Net::FTP. AUTHOR
Christian Hansen "ch@ngmedia.com" COPYRIGHT
This program is free software, you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.8.8 2008-03-01 Authen::Simple::FTP(3pm)
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