One of my network guys says that some servers allow the coding of a different 
IP address to be used in the handshake.

Normally, FTP in passive mode sends the host IP address and port number for the 
client to use. This is useless if there is a NAT'ing firewall in the path. My 
guy claims that you can change that to specify any address you want, 
specifically the NAT'ed address.

Anyone know what he is talking about?


Thanks!!

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