SFTP for Iseries?
I have done this successfully with a number of customers.
I'm not all that familiar with the AS/400 Operating System itself, so I usually have to rely on the admin to apply the scripts, but if the scripts are configured correctly it works like a champ.
Did you have a more specific question around it?
Matt what about Zipped files? Where the Iseries sends a zipped files, a unzipped program or script would be required. If so can I get some help with implementing it?