Username@servername Authentication Command Sequence

The FTP Client uses one of the following command sequences to make a connection when you have configured Style to username@servername in the Firewall tab of the Security Properties dialog box.

When Passthrough authentication is selected:

OPEN <proxy_server>
USER <firewall_username>
PASS <firewall_password>
USER <username>@<FTP_server>
PASS <FTP_server_password>

When Passthrough authentication is not selected:

OPEN <proxy_server>
USER <username>@<FTP_server>
PASS <FTP_server_password>