Webmethods OpenSSH Package

I have read the many posts regarding Secure FTP and OpenSSH and I have a few questions regarding the OpenSSH Package:

Is this OpenSSH package only to be used for communications outbound from IS and be installed on the IS inside the firewall?

Could the OpenSSH package perhaps be installed on the Reverse Proxy server in a DMZ and be used for both inbound and outbound communications?

Has anyone had any experience running the OpenSSH package on the Reverse Proxy and what has been your experience with it?