In a z/OS environment OSA-ICC's can be used two ways.

One way is as a z/OS system console.  I know you can require a login on a 
console, but I'm not sure what you may be able to see or do if you are not 
logged in.  I don't think you can issue commands, you may just be able to see 
messages roll across the console.  If you don't require console login's then 
whomever can "telnet" to the OSA-ICC has console access.  This does NOT require 
Communication Server to be active.

The other way is as a non-SNA 3270 terminal controlled by VTAM.  Which requires 
Communication Server to be active and for the devices to be configured in VTAM 
as non-SNA terminals.

In both cases you need to know the IP address and port that the OSA-ICC is 
listening on at a minimum.  In most (maybe all) you also need to know what LU 
name to request.  

If you are running z/VM, I'm not sure how it may deal with OSA-ICC's as I don't 
have z/VM experience with OSA-ICC's.



On Wed, 12 Jul 2023 08:06:51 -0500, Joe Monk <[email protected]> wrote:

>I think he was asking about the hosting company.
>
>They will always have access via the HMC. In addition, since their network
>will be used to access the OSA-ICC port, they will have access via that
>method.
>
>Joe
>
>On Wed, Jul 12, 2023 at 8:01 AM Tom Longfellow <
>[email protected]> wrote:
>
>> I am confused about which 'access' is at question.
>>
>> There is access to the card and access to the lpars using the card.
>> Basically the wires in and out of the physical OSA-ICC card.
>>
>> ANYONE that has connectivity to the Ethernet port on the OSA is
>> 'accessing' the OSA.
>> The 'OSA Specific Utilities' under HMC control then controls what LPARS
>> the people who 'access' the OSA can see within your mainframe..
>> The LPARS must also be told about the OSA-ICC.
>>
>> None of this will give them 'Access' to your operating systems or
>> applications.  In other words, they will still have to authenticate and
>> login just like any users of the systems.
>>
>> It boils down to the trust you have in your outsourcer.    They are the
>> fox in charge of this hen house.    IF they are sharing the physical OSA
>> across all customers, then the OSA-ICC configuration becomes your
>> gatekeeper/firewall to keep everyone isolated.
>>
>> Makes me wonder what the concerns are and what 'accesses'  are being
>> question.  Also, what access?  physically, to the applications and data?
>> etc.
>>
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