I might be missing something, but I'm not aware of any additional
costs related to adding OMVS segments to userids.   Its almost certain
that *some* of your userids already have them, so that they can be
"dubbed" to use Unix apis.

Also, it is possible to setup an OMVS segment so that the default
"shell" program restricts execution of anything other than what you
want (like the sftp-server).   This could, for example, be used to
restrict a user from using OMVS under TSO or logging in to SSH or
TTY-Telnet with a Unix Shell.

But, if FTP/TLS works with your firewall and or NAT routers and
partner systems, then there's nothing wrong with it.

Kirk Wolf
Dovetailed Technologies
http://dovetail.com


On Tue, Jan 5, 2010 at 6:12 PM, Donald Russell <[email protected]> wrote:
> On Tue, Jan 5, 2010 at 16:06, Kirk Wolf <[email protected]> wrote:
>
>> Don,
>>
>> RE: USS requirement for SFTP
>>
>> You can use IBM's sftp or our free Co:Z sftp if the z/OS userid has a
>> valid OMVS segment.     That's likely what is missing when you say
>> that "USS is not enabled", since z/OS has required USS for TCP/IP
>> support for a long time.
>>
>>
> Thanks,
> Yes... that helps with my understanding of what's what. :-) What I've
> learned: It's not that OMVS isn't there, it's just we don't grant access to
> it regularly except on one of our MVS systems. I wonder why that is.... I'm
> guessing it's money. :-)
>
> Well, I have a few things to work with now, and next week I expect the
> firewall thing to be resolved, so I may just stay with FTPS (TLS) since that
> satisfies the security people.
>
> Cheers
>
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