Chapter 3 - FTP Commands
List of Commands
F T P A d a p t e r R e f e r e n c e G u i d e
1 6
Without a firewall the start of a file transfer begins with:
♦
Establish a Socket connection to the remote host.
♦
Issue the
USER
command over the connection.
♦
Issue the
PASS
command over the connection.
When a firewall is present (used) more steps are performed in the beginning of
the transfer of the files.
These steps are dependent on the
/method
specified in the last part of the
-FIREWALL
command.
OPEN
♦
Establish a Socket connection to the firewall host
♦
Issue the following command over the connection in this order:
OPEN ftp_host
USER ftp_user
PASS ftp_pass
SITE
♦
Establish a Socket connection to the firewall host
♦
Issue the following command over the connection in this order:
USER fw_user
PASS fw_pass
SITE ftp_host
USER ftp_user
PASS ftp_pass
TRANSPARENT
♦
Establish a Socket connection to the remote host
♦
Issue the following command over the connection in this order:
USER fw_user
PASS fw_pass
USER ftp_user
PASS ftp_pass
USERFW
♦
Establish a Socket connection to the firewall host
♦
Issue the following command over the connection in this order:
