Re: Change DNS servers on IBM i

Yes, it's instant. I've been using Googles public DNS servers for years
now with zero issues ever.

I have used them for customers too who for some reason have them pointing
to old in house NT servers from the 20th century or something. What? You
can't ping Google.com and get a IP resolution? Or you can only because you
added a host table entry? *facepalm*

I don't see why anyone would use in house DNS (except for possible Intranet
things). Just one less thing to worry about.

But, I'm sure there's a reason. :)

Good tip, Rob.

Bradley V. Stone
www.bvstools.com
MAILTOOL Benefit #16 <https://www.bvstools.com/mailtool.html>: No external
"helper" PC system required. 100% IBM i native!

On Wed, Aug 30, 2017 at 2:13 PM, Rob Berendt <rob@xxxxxxxxx> wrote:

Want to test your dns servers even before you change to them? No problem.

First, you have to have the following on your system:
5770SS1 31 5050 Domain Name System


NSLOOKUP HOSTNAME(nra.org) DMNNAMSVR('8.8.8.8')

Now just replace nra.org with some piece of equipment that should be found
on your new dns at the address you enter at DMNNAMSVR.

Now, we only put
5770SS1 31 5050 Domain Name System
on our "hosting" lpars because if you start the DNS server (which we
don't) on your IBM i you will fail any audit because the binds are ALWAYS
obsolete. Well there is a stream file you can hack to indicate you're
running a higher bind than you are.
I opened up a ticket with IBM to update the bind level. They refuse
except at new releases of IBM i. Their arguement is that they fix any
CVE's discovered with PTF's but leave it at the old bind. I told them
that was nice but I still fail the audit.
And the audit is done by IBM.

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: Jeff Crosby <jlcrosby@xxxxxxxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date: 08/30/2017 02:46 PM
Subject: Change DNS servers on IBM i
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



All,

If I change the DNS servers on my IBM i via CHGTCPDMN and leave the old
DNS
servers running tonight, will:

1) My IBM i continue to send emails for now, then
2) enter restricted state at 3am for BRMS backup, and
3) when restarting after the restricted state backup, be using the new DNS
servers

Thanks.


--


Jeff Crosby
VP Information Systems
UniPro FoodService/Dilgard
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531
www.dilgardfoods.com

The opinions expressed are my own and not necessarily the opinion of my
company. Unless I say so.
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