I think I found something that will work nicely:
Name : ckermit
Arch : i386
Version: 8.0.209
Release: 9
Size : 3.0 M
Repo : installed
Summary: The quintessential all-purpose communications program
Description:
C-Kermit is a combined serial and network communication software
package offering a consistent, medium-independent, cross-platform
approach to connection establishment, terminal sessions, file transfer
and management, character-set translation, and automation of
communication tasks. For more information please see:
http://www.columbia.edu/kermit/Got it from the CentOS base yum repository. It's even listed by the EDI service provider as a tested ftp/ssl solution. Now for the fun part, getting it configured...