Configuring The Ftp Client; Establishing An Ftp Connection - 3Com 4510G Configuration Manual

Configuring the FTP Client

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.
Source address binding means to configure an IP address on a stable interface such as a loopback
interface or Dialer 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 (In IPv4 networking):
To do...
Enter system view
Configure the source address
of the FTP client
Exit to system view
Log in to the remote FTP
server directly in user view
Log in to the remote FTP
server indirectly in FTP client
view
Use the command...
system-view
ftp client source { interface
interface-type interface-number
| ip source-ip-address }
quit
ftp [ server-address
[ service-port ] [ source
{ interface interface-type
interface-number | ip
source-ip-address } ] ]
ftp
open server-address
[ service-port ]
12-3
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.
—
Use either approach.
The ftp command is available
in user view; and the open
command is available in FTP
client view.