Hi Nguyen,
please see IS Administrators Guide for further informations.
When using services from pub.client.ftp-Folder in WmPublic package this can be used to handle data in external FTP(S) servers.
When using the port feature in IS, the IS will act as a FTP(S) server, where files can be send to which will be processed by flow services.
For SFTP there are only services in pub.client.sftp-Folder available, but there is no possibility to setup a SFTP-Port.
Regards,
Holger
#webMethods#webmethods-Protocol-and-Transport#Integration-Server-and-ESB