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