[isalist] Re: "Domain Controllers" in ISA 2004
- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
- To: <isalist@xxxxxxxxxxxxx>
- Date: Thu, 8 Mar 2007 08:53:06 -0800
http://www.ISAserver.org
-------------------------------------------------------
Guido is going to get a workout...
System rules == traffic to & from ISA itself
Firewall Policies == traffic across ISA.
The only time you need to mess with non-system Policies for ISA-local traffic
is when the system policies can't do the job for you.
-----Original Message-----
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On
Behalf Of Gerald G. Young
Sent: Thursday, March 08, 2007 8:03 AM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: "Domain Controllers" in ISA 2004
Tell me about it… makes me wonder if Guido will be visiting Thor instead of
Tom, though. J
I found this tidbit of information very valuable. J
Out of curiosity – and as a bit of an aside – what is the best practice for
modifying system rules? I had been under the impression that you wanted to do
so as little as possible and add firewall rules.
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 Ball, Dan
Sent: Thursday, March 08, 2007 10:43 AM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: "Domain Controllers" in ISA 2004
Man, I wish I had known that a year ago, when we were experiencing the exactly
problem described!
________________________________
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 <mailto:RMoore@xxxxxxxx>
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 <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 <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 <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
>
> 215-241-7870
>
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