Very Computer

1. A Strange problem - 421 Service not available, remote server has closed connection

Everything works fine before, but suddenly the error occurs since
yesterday. Here is my machine configuration:

I have three Window Server 2003 machines.  Each one hosts a VMWare
server, which in turn contains both window based and linux based
virtual machines.

All the window based virtural machines have no problem connecting to
any outside world FTP server.  But the linux based (i386-redhat-linux-
gnu) virutal machines return the "421 Service not available, remote
server has closed connection" error right after the "username" is
entered.  For instance:

ftp> open wirefreethought.com
Connected to wirefreethought.com (66.199.224.58).
220 (vsFTPd 2.0.1)
Name (wirefreethought.com:root): vince
421 Service not available, remote server has closed connection
Login failed.
No control connection for command: Transport endpoint is not connected

The strange thing is, if I first do the "ping hostname", then
immediately follow by "ftp hostname", everything works fine.  Any
other times the same error occurs.  Why does this happen?  Everything
worked fine before until yesterday.

Any insight will be greatly appreciated!

Best Regards,
Vince

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