The sftp client-source command specifies the source IP address for the SFTP client to send packets.
The undo sftp client-source command restores the default source IP address for the SFTP client to send packets.
The default source IP address for the SFTP client to send packets is 0.0.0.0.
sftp client-source { -a source-ip-address | -i interface-type interface-number }
undo sftp client-source
| Parameter | Description | Value |
|---|---|---|
| -a source-ip-address | Specifies the source IP address. Set the value to the IP address of a loopback interface. |
The value is in dotted decimal notation. |
| -i interface-type interface-number | Specifies the loopback interface as the source interface. The IP address configured for the source interface is the source IP address for sending packets. If no IP address is configured for the source interface, the FTP connection cannot be set up. |
- |
Usage Scenario
If no source IP address is specified, the client uses the source IP address that the router specifies to send packets. The source IP address must be configured for an interface with stable performance. The loopback interface is recommended. Using the loopback interface as the source interface simplifies the ACL rule and security policy configuration. This shields the IP address differences and interface status impact, filters incoming and outgoing packets, and implements security authentication.
Prerequisites
The loopback source interface specified using the command must exist and have an IP address configured.
Precautions
The source interface must be set to the loopback interface. You can query the source IP address or primary IP address of the source interface for the SFTP connection on the SFTP server.
The sftp command also configures the source IP address whose priority is higher than that of the source IP address specified in the sftp client-source command. If you specify source addresses in the sftp client-source and sftp commands, the source IP address specified in the sftp command is used for data communication. The source address specified in the sftp client-source command applies to all SFTP connections. The source address specified in the sftp command applies only to the current SFTP connection.