RE: Changing everyone's UID Was: NFS security

My understanding was that the attributes are still there, just a lot
harder to get to. Our AD upgrade isn't beyond the initial research phase
yet. I'm the only one who deals with the linux boxes, and we have so few
users accessing them that we haven't decided what we are going to do
yet.

Kevin Bucknum
Senior Programmer Analyst
MEDDATA/MEDTRON
Tel: 985-893-2550

-----Original Message-----

From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf
Of Rob Berendt
Sent: Tuesday, October 31, 2017 8:54 AM
To: Midrange Systems Technical Discussion
Subject: RE: Changing everyone's UID Was: NFS security

Well, isn't this scary...

<snip>
https://msdn.microsoft.com/en-us/library/cc731178(v=ws.11).aspx
Identity Management for UNIX is deprecated. If you try to upgrade a
computer that runs Identity Management for UNIX, you may receive a
warning that it must be removed before the upgrade can proceed. In

that

case, see Installing or removing Identity Management for UNIX by using

a

command line.
</snip>

or is that something different?



Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600

Mail

to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Rob Berendt <rob@xxxxxxxxx>
To: Midrange Systems Technical Discussion

<midrange-l@xxxxxxxxxxxx>

Date: 10/31/2017 09:50 AM
Subject: RE: Changing everyone's UID Was: NFS security
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



https://technet.microsoft.com/en-us/library/cc771238(v=ws.11).aspx
Now, if I can just figure out how to add the "Unix Attributes" tab...


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Rob Berendt <rob@xxxxxxxxx>
To: Midrange Systems Technical Discussion

<midrange-l@xxxxxxxxxxxx>

Date: 10/31/2017 08:55 AM
Subject: RE: Changing everyone's UID Was: NFS security
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



How do you see/set UID in Windows?


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: "Kevin Bucknum" <Kevin@xxxxxxxxxxxxxxxxxxx>
To: "Midrange Systems Technical Discussion"

<midrange-l@xxxxxxxxxxxx>

Date: 10/31/2017 08:51 AM
Subject: RE: Changing everyone's UID Was: NFS security
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



For linux at least yes. If you are using active directory (at least

the

way that Centrify implements it) then the uid will match the windows
one. If you have separate signons it is easy enough to change it. I

just

used these instructions last week to match linux uid/gid to windows
specifically so that I could use NFS and not have to worry about

mapping

numbers.

https://www.cyberciti.biz/faq/linux-change-user-group-uid-gid-for-all-ow

ned-files/

Kevin Bucknum
Senior Programmer Analyst
MEDDATA/MEDTRON
Tel: 985-893-2550

-----Original Message-----

From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On

Behalf

Of Rob Berendt
Sent: Tuesday, October 31, 2017 7:41 AM
To: Midrange Systems Technical Discussion
Subject: Changing everyone's UID Was: NFS security

Due to NFS security concerns I am thinking of changing everyone's

UID

on

every system to match their employee number. This sure beats

opening

up

our /Banking subdirectory to QNFSANON so every Tom, Dick and Harry

can

MOUNT over that EXPORTFS.

Anyone see a concern with this?

From my reading I see that the user cannot be active in any process.
And if we have any temporary employee numbers we often use an alpha
character which we'll have to use a number instead.

https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_73/apis/Q

SYCHGID.htm

Also, not that this affects my current project but is there some way

to set a

Windows user UID? Linux?

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600

Mail

to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Rob Berendt <rob@xxxxxxxxx>
To: Midrange Systems Technical Discussion

<midrange-l@xxxxxxxxxxxx>

Date: 10/31/2017 08:27 AM
Subject: Re: NFS security
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



Thank you. That's exactly what I am looking for.
Now comes the next project: Changing everyone's "User ID number"

UID.

Stay tuned for follow up thread...


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Jack Kingsley <iseriesflorida@xxxxxxxxx>
To: Midrange Systems Technical Discussion

<midrange-l@xxxxxxxxxxxx>

Date: 10/31/2017 05:27 AM
Subject: Re: NFS security
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



Rob, check number 3 out when you have time.
http://www-01.ibm.com/support/docview.wss?uid=nas8N1016376



On Mon, Oct 30, 2017 at 3:20 PM, Rob Berendt <rob@xxxxxxxxx> wrote:

I am talking about NFS, as in EXPORTFS and MOUNT. I am not

talking

about

QNTC, NetServer and that stuff.

When I EXPORTFS a directory and some other lpar (could also be

Windows

or

Linux) does a MOUNT on this, the user associated with the access

is

QNFSANON. Well, I have a problem with having to run
CHGAUT OBJ('/Banking') USER(QNFSANON) DTAAUT(*RWX)

OBJAUT(*ALL)

SUBTREE(*ALL)
to allow access to the '/Banking' directory to every Tom, Dick and

Harry

to allow NFS access between lpars.
Is there some option on EXPORTFS to say use the credentials of the

remote

user?

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

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