Operation Manual – FTP-SFTP-TFTPH3C S3100-52P Ethernet Switch Chapter 1 FTP and SFTP Configuration1-5IV. Specifying the source interface and source IP address for an FTP serverYou can specify the source interface and source IP address for an FTP server toenhance server security. After this configuration, FTP clients can access this serveronly through the IP address of the specified interface or the specified IP address.Note:Source interface refers to the existing VLAN interface or Loopback interface on thedevice. Source IP address refers to the IP address configured for the interface on thedevice. Each source interface corresponds to a source IP address. Therefore,specifying a source interface for the FTP server is the same as specifying the IPaddress of this interface as the source IP address.Follow these steps to specify the source interface and source IP address for an FTPserver:To do… Use the command… RemarksEnter system view system-view —Specify the sourceinterface for an FTPserverftp-server source-interfaceinterface-typeinterface-numberSpecifying the source IPaddress for an FTP serverftp-server source-ipip-addressUse either commandNot specified bydefault.Note:z The specified interface must be an existing one. Otherwise a prompt appears toshow that the configuration fails.z The value of the ip-address argument must be an IP address on the device wherethe configuration is performed. Otherwise a prompt appears to show that theconfiguration fails.z You can specify only one source interface or source IP address for the FTP at onetime. That is, only one of the commands ftp-server source-interface andftp-server source-ip can be valid at one time. If you execute both of them, the newsetting will overwrite the original one.z If the switch (FTP server) is the command switch or member switch in a cluster, donot use the ftp-server source-ip command to specify the private IP address of thecluster as the source IP address of the FTP server. Otherwise, FTP does not takeeffect.