[Jakarta-commons Wiki] Update of "VfsProblemsFtp" by MarioIvankovits

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The following page has been changed by MarioIvankovits:
http://wiki.apache.org/jakarta-commons/VfsProblemsFtp

New page:
= VFS - Problems with FTP =

== Steps to check ==

=== wont work at all ===

 * When using active mode (the default) try using passive mode
{{{
FtpFileSystemConfigBuilder.getInstance().setPassiveMode()
}}}

=== works, but stops working sometimes ===

 * check the firewall to see if it takes your massive access as "denial-of-service" attack
 * if you use *x/xinetd check the parameters "cps" and "max_load"

== Reporting ==

When reporting problems, please provide the following informations

 * ftp server (software used)
 * connection to ftp server (direct - local, extern, extern through firewall, vpn)
 * provide a tcpdump of network communication (send through personal mail to a VFS developer after you contacted one through the mailing list)
{{{
tcpdump -s 2048 -w ftp.log host <your ftp host ip>
}}}
(*x command line - use ethereal on windows)
'''Beware: such a dump contains your password in plain text'''


*x = unix/linux

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