[isalist] Re: "Domain Controllers" in ISA 2004
- From: "Thor \(Hammer of God\)" <thor@xxxxxxxxxxxxxxx>
- To: <isalist@xxxxxxxxxxxxx>
- Date: Thu, 8 Mar 2007 07:31:37 -0800
[isalist] Re: "Domain Controllers" in ISA 2004By default, the built-in Domain
Controllers object is referenced in the "To" destination set in the System
Policy for:
DNS
NTP
Active Directory
That's it. But, you should go through and check to make sure someone didn't
put them in other access rules...
t
----- Original Message -----
From: Rob Moore
To: isalist@xxxxxxxxxxxxx
Sent: Thursday, March 08, 2007 7:14 AM
Subject: [isalist] Re: "Domain Controllers" in ISA 2004
Good idea! Thanks!
Any way to find all the places in System Policy that “Domain Controllers”
is used, besides just eye balling it?
Thanks,
Rob
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On
Behalf Of Thor (Hammer of God)
Sent: Wednesday, March 07, 2007 4:32 PM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: "Domain Controllers" in ISA 2004
Rob-
The "domain controllers" list is a built-in, non-user-changeable object that
is populated during installation time by the ISA server polling AD for existing
domain controllers. The default system DNS system policy is set to use the
domain controllers object.
Just create your own Domain Controllers object (like "DC's" or something) and
populate that with the actual DC's. Then remove the "Domain Controllers"
object from the System Policy and replace it with your "DC's" object (and
anywhere else you use that object) and life will return to normal.
t
----- Original Message -----
From: Rob Moore
To: isalist@xxxxxxxxxxxxx
Sent: Wednesday, March 07, 2007 10:38 AM
Subject: [isalist] Re: "Domain Controllers" in ISA 2004
The ISA server is, indeed, a DNS server. I’m looking at The Book and it
does, indeed, say that the external interface should have NO DNS entry. I’m
not sure how the internal IP address of the ISA server got in there. I suppose
I must have put it in there, but I don’t remember doing it. Anyway, it’s
out now.
Rob
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On
Behalf Of Gerald G. Young
Sent: Wednesday, March 07, 2007 1:10 PM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: "Domain Controllers" in ISA 2004
Is the ISA server a DNS server, too?
If not, I would think you’d want to specify the DNS server IP addresses
on the NIC that resides on the same network as your DCs. It would probably be a
good idea to remove them from the other NIC.
Cordially yours,
Jerry G. Young II
Application Engineer, Platform Engineering and Architecture
NTT America, an NTT Communications Company
22451 Shaw Rd.
Sterling, VA 20166
Office: 571-434-1319
Fax: 703-333-6749
Email: g.young@xxxxxxxx
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On
Behalf Of Rob Moore
Sent: Wednesday, March 07, 2007 11:51 AM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: "Domain Controllers" in ISA 2004
Yes to both of your AD questions. The ISA server points only to itself (the
internal address) on both NICs.
Rob
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On
Behalf Of Gerald G. Young
Sent: Wednesday, March 07, 2007 11:12 AM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: "Domain Controllers" in ISA 2004
Rob,
Are sites configured in Active Directory and do you have subnets defined
for the sites in Active Directory? You’ll also want to check your NIC
configuration for DNS servers on the ISA box(es). Are those settings up to
date?
Cordially yours,
Jerry G. Young II
Application Engineer, Platform Engineering and Architecture
NTT America, an NTT Communications Company
22451 Shaw Rd.
Sterling, VA 20166
Office: 571-434-1319
Fax: 703-333-6749
Email: g.young@xxxxxxxx
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On
Behalf Of Rob Moore
Sent: Tuesday, March 06, 2007 9:57 PM
To: isalist@xxxxxxxxxxxxx
Subject: RE: [isalist] Re: "Domain Controllers" in ISA 2004
Here's what I'm experiencing. We have somewheres around 15 DCs in the
domain. Two of them are on the local subnet. I recently retired one of the two
local DCs. Then I noticed that our Internet connection got real slow--mainly a
delay of, say, 20 seconds before a page would load. I started poking around
with DNS. If I changed the WAN card on the firewall to point at an external DNS
server, the web sped up a bunch. But you probably know that this isn't a good
arrangement and pretty soon thereafter we got other problems happening. So I
pointed DNS on the WAN card back to the LAN address on the firewall. The other
problems went away but slow access came back. So I poked around on the firewall
a bit and found that Domain Controllers computer set. I noticed that the list
in there was out of date, and both of the DCs on the local domain that were in
that list are now retired. So I'm guessing (maybe incorrectly) that that
somehow bears on this problem--like maybe the ISA server is now trying to talk
to DCs on remote subnets since it can't find the two DCs on the local subnet.
So I was hoping if I could edit that computer set I could make the problem go
away.
Anyway, that's what's happening. Maybe I'm way off base? Any suggestions?
Rob
----------------------------------------------------------------------------
From: isalist-bounce@xxxxxxxxxxxxx on behalf of Thomas W Shinder
Sent: Tue 3/6/2007 3:54 PM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: "Domain Controllers" in ISA 2004
http://www.ISAserver.org
-------------------------------------------------------
The domain controllers computer set is one of the great mysteries of the
ISA firewall. You won't find any documentation about it and many will
deny its existance. Never bring it up in polite company.
Thomas W Shinder, M.D.
Site: www.isaserver.org
Blog: http://blogs.isaserver.org/shinder/
Book: http://tinyurl.com/3xqb7
MVP -- Microsoft Firewalls (ISA)
> -----Original Message-----
> From: isalist-bounce@xxxxxxxxxxxxx
> [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Rob Moore
> Sent: Tuesday, March 06, 2007 1:23 PM
> To: isalist@xxxxxxxxxxxxx
> Subject: [isalist] Re: "Domain Controllers" in ISA 2004
>
> http://www.ISAserver.org
> -------------------------------------------------------
>
> Can this field not be edited? Is the ISA server supposed to
> pick up the
> DCs automatically? What's the mechanism for that? Is there
> something in
> my configuration that's not allowing this to happen?
>
> Thanks,
> Rob
>
> -----Original Message-----
> From: Rob Moore
> Sent: Tuesday, March 06, 2007 1:18 PM
> To: 'isalist@xxxxxxxxxxxxx'
> Subject: RE: [isalist] Re: "Domain Controllers" in ISA 2004
>
> I have a stand-alone Standard edition server. I was trying to edit it
> from the ISA 2004 console.
>
> Rob
>
> -----Original Message-----
> From: isalist-bounce@xxxxxxxxxxxxx
> [mailto:isalist-bounce@xxxxxxxxxxxxx]
> On Behalf Of Jim Harrison
> Sent: Tuesday, March 06, 2007 12:55 PM
> To: isalist@xxxxxxxxxxxxx
> Subject: [isalist] Re: "Domain Controllers" in ISA 2004
>
> http://www.ISAserver.org
> -------------------------------------------------------
>
> Where are you editing from; array or enterprise level?
>
> -----Original Message-----
> From: isalist-bounce@xxxxxxxxxxxxx
> [mailto:isalist-bounce@xxxxxxxxxxxxx]
> On Behalf Of Rob Moore
> Sent: Tuesday, March 06, 2007 9:10 AM
> To: isalist@xxxxxxxxxxxxx
> Subject: [isalist] "Domain Controllers" in ISA 2004
>
> I have a Computer Set in my ISA 2004 called "Domain Controllers." The
> list is inaccurate, and I think it's starting to cause us
> some trouble.
> But I can't seem to edit it. How do I make changes to it?
>
> Thanks,
>
> Rob
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> Rob Moore
>
> Network Manager
>
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