Establishing An Ftp Connection - H3C S5120-SI Series Configuration Manual

Only users with the manage level can use the ftp command to log in to an FTP server, enter FTP client
view, and execute directory and file related commands. However, whether the commands can be
executed successfully depends on the authorizations of the FTP server.

Establishing an FTP Connection

To access an FTP server, an FTP client must establish a connection with the FTP server. Two ways are
available to establish a connection: using the ftp command to establish the connection directly; using
the open command in FTP client view.
Before using the ftp command to establish a FTP connection, you can perform source address binding.
The source address binding means to configure an IP address on a stable interface such as a loopback
interface, and then use this IP address as the source IP address of an FTP connection. The source
address binding function simplifies the configuration of ACL rules and security policies. You just need to
specify the source or destination address argument in an ACL rule as this address to filter inbound and
outbound packets on the device, ignoring the difference between interface IP addresses as well as the
affect of interface statuses. You can configure the source address by configuring the source interface or
source IP address. The primary IP address configured on the source interface is the source address of
the transmitted packets. The source address of the transmitted packets is selected following these
rules:
If no source address is specified, the FTP client uses the IP address of the interface determined by
the matched route as the source IP address to communicate with an FTP server.
If the source address is specified with the ftp client source or ftp command, this source address is
used to communicate with an FTP server.
If you use the ftp client source command and the ftp command to specify a source address
respectively, the source address specified with the ftp command is used to communicate with an
FTP server.
The source address specified with the ftp client source command is valid for all FTP connections and
the source address specified with the ftp command is valid only for the current FTP connection.
Follow these steps to establish an FTP connection:
To do...
Enter system view
Configure the source address
of the FTP client
Exit to system view
Use the command...
system-view
ftp client source { interface
interface-type interface-number | ip
source-ip-address }
quit
1-3
Remarks
—
Optional
A device uses the IP
address of the interface
determined by the
matched route as the
source IP address to
communicate with the FTP
server by default.
—