Re: z/osmf Network Configuration Assistant

2020-10-28 Thread Keith Gooding

Thank you all for your replies.

It appears that z/OSMF NCA is, as we say, the best thing since sliced 
bread, but many do not like sliced bread.


Our configuration is not typical because the system is used to test a 
SSL/TLS application and developers need to test z/OS servers and clients 
with a number of different AT-TLS rules. The original configuration was 
created many years ago with the Windows tool and thereafter was managed 
manually - usually by adding yet another rule based on a previous rule 
but sometimes requiring new actions or cipher suites.  It all got rather 
messy and the need for TLS 1.3 has prompted many changes. Using AT-TLS 
rather than native SSL/TLS support in z/OS-supplied components will also 
complicate matters.


I do like NCA but just importing our current configuration produces a 
complicated configuration with names based on 'mangled' profile 
construct names and a lot of requirement mapping tables each containing 
just one entry.


On the other hand I like the fact that NCA clearly presents the choices 
to be made - a list of cipher suites and elliptic curve groups specific 
to TLS 1.3 for instance - and although defaults can be taken we are 
aware that the default has been chosen rather than being something that 
was overlooked. Also I like the fact that I can print a configuration in 
a form that will make sense to a developer.


I think I may end up with a horrible compromise where I use NCA 'to 
create a set of definitions for TLS 1.3 testing 'from scratch' and merge 
them into the full policy.



Keith


On 27/10/2020 13:07, Tom Conley wrote:


Keith,

IBM decided that AT-TLS was so inscrutable that you needed an app to 
configure it.  Untrue.  You can manually configure AT-TLS for TN3270 
in less than a day, provided you can do all the tasks necessary.  
Please check out my presentation on this (WTW):


https://www.newera.com/INFO/Top_11_Things_032018.pdf

Please let me know if you have any questions or concerns.

Regards,
Tom Conley

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Re: z/osmf Network Configuration Assistant

2020-10-27 Thread Michael Babcock
I also use manual modification and it works fine.

NCA in the other hand seems daunting to me.  A question and answer format
like zCX would be far better IMHO.

On Tue, Oct 27, 2020 at 7:05 AM Roberto Halais 
wrote:

> We are using manual modifications. Before, we used the Windows application
> which was excellent.
> We tried z/OSMF NCA but don't like it.
> Maybe IBM will force us to use it.
>
> On Mon, Oct 26, 2020 at 12:21 PM Keith Gooding <
> 034af3894af4-dmarc-requ...@listserv.ua.edu> wrote:
>
> > Is anyone using this to maintain AT-TLS policies or any other policies ?
> >
> > Any views on NCA vs manual editing of the policy file ?
> >
> > When I first encountered AT-TLS I used the Windows version to generate a
> > simple policy file for one type of application and thereafter did manual
> > edits to the policy file (all applications were similar). Using AT-TLS
> for
> > z/OS-supplied applications such as Telnet and FTP will make the policy
> file
> > more complicated and I am wondering whether NCA is the best way.
> >
> > Keith
> > --
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>
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Michael Babcock
OneMain Financial
z/OS Systems Programmer, Lead

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Re: z/osmf Network Configuration Assistant

2020-10-27 Thread Tom Conley

On 10/26/2020 12:21 PM, Keith Gooding wrote:

Is anyone using this to maintain AT-TLS policies or any other policies ?

Any views on NCA vs manual editing of the policy file ?

When I first encountered AT-TLS I used the Windows version to generate a simple 
policy file for one type of application and thereafter did manual edits to the 
policy file (all applications were similar). Using AT-TLS for z/OS-supplied 
applications such as Telnet and FTP will make the policy file more complicated 
and I am wondering whether NCA is the best way.

Keith
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Keith,

IBM decided that AT-TLS was so inscrutable that you needed an app to 
configure it.  Untrue.  You can manually configure AT-TLS for TN3270 in 
less than a day, provided you can do all the tasks necessary.  Please 
check out my presentation on this (WTW):


https://www.newera.com/INFO/Top_11_Things_032018.pdf

Please let me know if you have any questions or concerns.

Regards,
Tom Conley

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For IBM-MAIN subscribe / signoff / archive access instructions,
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Re: z/osmf Network Configuration Assistant

2020-10-27 Thread Roberto Halais
We are using manual modifications. Before, we used the Windows application
which was excellent.
We tried z/OSMF NCA but don't like it.
Maybe IBM will force us to use it.

On Mon, Oct 26, 2020 at 12:21 PM Keith Gooding <
034af3894af4-dmarc-requ...@listserv.ua.edu> wrote:

> Is anyone using this to maintain AT-TLS policies or any other policies ?
>
> Any views on NCA vs manual editing of the policy file ?
>
> When I first encountered AT-TLS I used the Windows version to generate a
> simple policy file for one type of application and thereafter did manual
> edits to the policy file (all applications were similar). Using AT-TLS for
> z/OS-supplied applications such as Telnet and FTP will make the policy file
> more complicated and I am wondering whether NCA is the best way.
>
> Keith
> --
> For IBM-MAIN subscribe / signoff / archive access instructions,
> send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
>


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Re: z/osmf Network Configuration Assistant

2020-10-26 Thread Mike Wawiorko
If you are going beyond 2-3 simple rules you'll love NCA in ZOSMF once you get 
it going.

Chances of getting what you want is minimal with more than half a dozen complex 
rules if coding it manually. 

Health Check proves you have valid syntax and lets you check your work.

Mike Wawiorko


-Original Message-
From: IBM Mainframe Discussion List  On Behalf Of 
Keith Gooding
Sent: 26 October 2020 16:11
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: z/osmf Network Configuration Assistant


This mail originated from outside our organisation - 
034af3894af4-dmarc-requ...@listserv.ua.edu

Is anyone using this to maintain AT-TLS policies or any other policies ?

Any views on NCA vs manual editing of the policy file ?

When I first encountered AT-TLS I used the Windows version to generate a simple 
policy file for one type of application and thereafter did manual edits to the 
policy file (all applications were similar). Using AT-TLS for z/OS-supplied 
applications such as Telnet and FTP will make the policy file more complicated 
and I am wondering whether NCA is the best way.

Keith
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z/osmf Network Configuration Assistant

2020-10-26 Thread Keith Gooding
Is anyone using this to maintain AT-TLS policies or any other policies ?

Any views on NCA vs manual editing of the policy file ?

When I first encountered AT-TLS I used the Windows version to generate a simple 
policy file for one type of application and thereafter did manual edits to the 
policy file (all applications were similar). Using AT-TLS for z/OS-supplied 
applications such as Telnet and FTP will make the policy file more complicated 
and I am wondering whether NCA is the best way.

Keith
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