[isalist] Re: Slightly OT Again:HP ProLiant DL320 Firewall/VPN/Cache Server setup DNS problem
- From: "Thomas W Shinder" <tshinder@xxxxxxxxxxx>
- To: <isalist@xxxxxxxxxxxxx>
- Date: Fri, 7 Jul 2006 10:26:09 -0500
Hi Barbara,
Thanks for getting the book! But one thing about my books, it's like
going to a medical school clinical lecture. If I'm lecturing about
evacuating epidural hematomas, you have to listen to the whole thing --
you can't wink out during the time I'm talking about preparing the skull
and post-evacuation tamponade.
So, what you missed are the assumptions on page 493, which was that you
don't have any other servers on your network, and thus we are installing
a DNS server on the ISA firewall. Is that assumption correct for your
network?
Tom
Thomas W Shinder, M.D.
Site: www.isaserver.org <http://www.isaserver.org/>
Blog: http://blogs.isaserver.org/shinder/
Book: http://tinyurl.com/3xqb7 <http://tinyurl.com/3xqb7>
MVP -- ISA Firewalls
________________________________
From: isalist-bounce@xxxxxxxxxxxxx
[mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Barbara Causey
Sent: Friday, July 07, 2006 9:16 AM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: Slightly OT Again:HP ProLiant DL320
Firewall/VPN/Cache Server setup DNS problem
Thanks to everyone for their help. It is working now, but
something is still not right. If I set up the client computers to use
the ISA server as a web proxy server then no Internet access. The ISA
2000 server was set up this way and it worked great.
In answer to your questions Dr. Tom, I was following the
instructions in your book that said to set up the ISA server as a
caching only DNS server. I configured the internal DNS server to use the
ISA's DNS server as its forwarder and I created the rule you stated. The
client computers are using the internal DNS server.
Any ideas on what else could be wrong?
Barbara
----- Original Message -----
From: Thomas W Shinder <mailto:tshinder@xxxxxxxxxxx>
To: isalist@xxxxxxxxxxxxx
Sent: Thursday, July 06, 2006 1:18 PM
Subject: [isalist] Re: Slightly OT Again:HP ProLiant
DL320 Firewall/VPN/Cache Server setup DNS problem
Hi Barbara,
Why are you running a DNS server on the ISA firewall? Is
this configured as a caching only DNS server? If so, you configure the
internal DNS server to use the ISA firewall's DNS server as it's
forwarder, and you need to create a rule that allows the internal DNS
server access to the Local Host Network for the DNS protocol.
Also, the clients should not be using the ISA firewall's
caching only DNS server as their DNS server, they should be using the
internal DNS server for both internal and external name resolution.
Keep in mind that the caching only DNS server on the ISA
firewall is a poor man's solution. The best solution is to have DNS
resolvers on a DMZ segment.
HTH,
Tom
Thomas W Shinder, M.D.
Site: www.isaserver.org <http://www.isaserver.org/>
Blog: http://blogs.isaserver.org/shinder/
Book: http://tinyurl.com/3xqb7
<http://tinyurl.com/3xqb7>
MVP -- ISA Firewalls
________________________________
From: isalist-bounce@xxxxxxxxxxxxx
[mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Barbara Causey
Sent: Thursday, July 06, 2006 12:01 PM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Slightly OT Again:HP ProLiant
DL320 Firewall/VPN/Cache Server setup DNS problem
Hello, it's me again. :-)
I set up this server as a caching only DNS
server following the instructions
in the ISA Server 2004 book by Dr. Tom and I can
access the Internet on this
server, but not on any of the internal
computers. I get the "Can not find
server or DNS error". I can ping the router
through this server, but can't
get anywhere on the Internet. Everything works
fine through the old ISA 2000
server, but when I switch over to the new one
you can't go anywhere. Would
someone please point me in the right direction
to resolve this matter?
Thank you,
Barbara Causey
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